Why Investors Often Underperform Their Own Investments

Important Disclosure — Scope of Advice: This article is general financial education about investor behaviour. It is not a recommendation of any specific investment or strategy, and it is not investment advice. The author is a licensed insurance professional (Financial Security Advisor), not a CIRO-registered investment advisor; investment and securities decisions should be made with a CIRO-registered advisor. This article is educational only.

Here’s one of the strangest truths in all of investing: you can own a good investment and still walk away with a poor result. The investment does well. You do not. How is that possible? The answer isn’t in the market, the fund, or the economy. It’s in the mirror. The single biggest threat to your investment returns isn’t a crash, a fee, or a bad pick. It’s you — or more precisely, your own very human emotions. Let me show you how this works, because understanding it might be worth more than any investment tip you’ll ever receive.

The Gap Nobody Talks About

Let’s start with a distinction that most people have never had explained to them, and that quietly shapes their entire financial life. There are two different returns hiding inside every investment. There’s the return the investment itself earns — what it delivers to someone who simply buys it and holds it. And there’s the return the investor actually captures — what ends up in their pocket after all their buying, selling, and second-guessing along the way. Most people assume these two numbers are the same. They are not.

In fact, the return an investor captures is frequently lower — sometimes considerably lower — than the return the investment itself produced. Read that again, because it’s the heart of everything that follows. Two people can own the exact same investment over the exact same period and walk away with very different results, purely because of how they behaved along the way. One bought it, held it, and let it do its work. The other bought and sold, jumped in and out, reacted to every twist and turn — and ended up with less, sometimes much less, than the investment itself delivered. This difference has a name in the world of finance, but the name matters less than the lesson: there is a gap between what investments earn and what investors earn, and that gap is not created by markets. It’s created by human behaviour. The investment didn’t fail the investor. The investor’s own decisions cost them a portion of what the investment would otherwise have given them. So the crucial question isn’t just “what should I invest in?” It’s also “how do I keep myself from sabotaging whatever I invest in?” And to answer that, we have to look at the real culprit — and it isn’t the market.

Why Your Own Mind Is the Problem

Here’s the uncomfortable truth at the centre of this whole discussion, and the sooner you make peace with it, the better an investor you’ll become. The biggest threat to your investment returns is not the market. It’s not fees. It’s not picking the wrong fund. It’s you. More specifically, it’s the way your mind is wired to respond to gains and losses.

Think about what an investment actually is once you own it. It doesn’t have feelings. It doesn’t panic when the news is bad. It doesn’t get greedy when everyone’s celebrating. It simply is what it is, doing what it does, indifferent to how you feel about it. You, on the other hand, are a human being — and human beings did not evolve to be calm in the face of gaining and losing money. Our instincts were built for physical survival, where reacting quickly to threats kept us alive. Those same instincts, applied to investing, work against us. When we see danger — falling prices — every instinct screams at us to flee. When we see others prospering — rising prices — every instinct urges us to join in. These instincts served our ancestors well on the savanna. They serve us poorly in the market. This is why investing is often described as simple but not easy. The simple part is the strategy: own good investments, give them time, don’t interfere. The hard part is doing it — because doing it means overriding instincts that feel absolutely right in the moment. The knowledge isn’t the obstacle. Almost everyone knows, in theory, to buy low and sell high. The behaviour is the obstacle. And to understand the behaviour, we have to name the two emotions that drive most of the damage.

The Two Emotions That Cost You the Most

Now we get to the two culprits — the pair of emotions responsible for most of the self-inflicted damage in investing. Once you can recognize them, you can begin to defend against them. They are fear and greed. Simple, ancient, powerful — and, for an investor, expensive.

Consider how each one operates. Greed — though it rarely feels like greed; it usually feels like excitement, optimism, or the simple fear of being left out — shows up when markets are rising. Everything is going up. The news is glowing. Friends and neighbours are talking about their gains. And the urge to jump in grows strongest at exactly the moment prices are highest. That’s greed doing its work: pulling you toward buying high. Fear operates on the other side of the cycle. When markets fall, losses feel genuinely painful — far more painful, research consistently shows, than equivalent gains feel good. The news turns grim. Every headline suggests worse is coming. And the urge to sell, to “stop the bleeding,” to “get out before it gets worse,” grows strongest at exactly the moment prices are lowest. That’s fear doing its work: pushing you toward selling low. Put the two together and you have a recipe for the precise opposite of successful investing: buy high when greed peaks, sell low when fear peaks. What makes this so insidious is that neither emotion announces itself as a mistake. Selling in a crash doesn’t feel like an error — it feels like prudence, like responsibility, like protecting your family. Buying in a boom doesn’t feel like an error — it feels like opportunity, like being smart, like not missing out. The emotions wear the mask of good judgment. That disguise is exactly why they’re so costly — and why simply knowing their names is the beginning of protection.

The Cruelest Irony: Selling Right Before the Recovery

There’s a particular version of this mistake that deserves its own section, because it’s the most painful of all — and understanding it might be the single most useful thing you take from this article. It’s what happens when fear wins during a market decline. And the cruelty of it is almost poetic.

Here’s the pattern. Markets fall. Fear builds. At some point — usually near the bottom, when the pain is greatest and the news is darkest — the investor can’t take it anymore and sells, converting a temporary decline on paper into a permanent, realized loss. And then something happens that feels almost unfair: the market recovers. It always has, historically, though of course no one can promise when or guarantee the future. But the investor who sold isn’t there for the recovery. They locked in their loss at the bottom, and then they missed the rebound that would have healed it. Worse still, they’re now on the sidelines, afraid to get back in, often waiting until prices have risen substantially — until it “feels safe” again — which means they frequently buy back in at higher prices than they sold at. Sold low, bought back high. The exact wrong sequence, driven entirely by emotion. This is how a temporary decline, which patient investors simply lived through, becomes a permanent loss for the investor who panicked. The market didn’t take their money. Their fear did. And this is why one of the most valuable things you can understand about investing is that declines are normal, recoveries have historically followed, and the investor’s job during turbulence is very often to do the hardest thing of all: nothing.

Why Doing Nothing Is So Hard — and So Valuable

This brings us to a principle that runs against every instinct you have, which is exactly why it’s so powerful. In most of life, action is a virtue. When something’s wrong, we fix it. When there’s a problem, we act. Doing nothing feels like negligence. But in investing, this instinct betrays us — because activity and results are frequently at odds, and doing nothing is often the wisest and most profitable choice available.

Here’s why. Every time you make a move in reaction to the market, you’re actually making two decisions, and both have to be right. You have to decide when to get out, and then you have to decide when to get back in. Each of those decisions is a fresh opportunity for fear or greed to lead you astray. The investor who reacts to every headline — who sells when scared and buys when excited — is handing their emotions repeated chances to do damage. The investor who builds a sound plan and then largely leaves it alone gives their emotions far fewer openings. So the discipline of inaction — of sitting still through the noise, of not reacting to every frightening headline or exciting rally — is not laziness or negligence. It is one of the hardest and most valuable skills an investor can develop. Now, an important clarification: doing nothing doesn’t mean never adjusting. There’s a real difference between a planned, sensible adjustment — periodic rebalancing back to your target, or a change because your life circumstances genuinely changed — and an emotional reaction to a scary market. The first is disciplined. The second is the mistake we’ve been describing. The skill is telling them apart: adjusting for the right reasons, on your own schedule, while refusing to let the market’s mood dictate your moves. The urge to “do something” when markets lurch is powerful. Resisting it, most of the time, is how patient investors protect what they’ve built. Which raises the practical question: how do you actually resist an urge this strong?

How to Protect Yourself From Yourself

So if the enemy is our own emotion, and the emotion is powerful, how do we actually defend against it? The answer isn’t to become a colder, more rational person — that’s not how humans work, and trying usually fails. The answer is to build systems and habits that keep your emotions from making your decisions, especially when those emotions are at their loudest. Here are the principles that help most.

First, make your important decisions in calm times, not turbulent ones. Decide in advance how you’ll respond to a market decline — before one happens — so that when fear arrives, you’re following a plan you made with a clear head rather than improvising in a panic. Second, understand your genuine tolerance for risk before it’s tested, so you’re invested in a way you can actually stomach when markets get rough; many emotional sales happen simply because someone was taking more risk than they could emotionally handle. Third, watch your investments less. Constant checking amplifies anxiety and manufactures the temptation to act — the more often you look, the more often you’ll feel you should do something. Fourth, reframe declines as normal and expected rather than as emergencies; a downturn is not a signal to act, it’s a recurring feature of investing that patient investors ride through. And fifth — often the most valuable of all — work with someone who can be a steady, objective presence when your emotions are running high. This is one of the most underappreciated roles a good CIRO-registered advisor plays. We tend to think an advisor’s value is in picking investments. But often their greatest value is behavioural: being the calm voice that talks you off the ledge during a crash, that reminds you of your plan when you’re tempted to abandon it, that stands between your worst impulses and your portfolio at the exact moment you most need someone to. An advisor who keeps you from selling at the bottom even once may earn their fee for a lifetime. That’s not a product pitch — it’s a genuine, and genuinely overlooked, source of value.

The Discipline That Beats Intelligence — The Honest Takeaway

Let me bring this together with the idea that sits underneath everything we’ve discussed, because it’s oddly liberating once you accept it. Successful investing depends far less on intelligence than most people think, and far more on temperament. You do not need to be brilliant. You do not need to predict the market, pick the perfect investment, or outsmart anyone. You need to be disciplined — to control your own behaviour when it matters most. And discipline is available to everyone, regardless of how much they know about finance.

Here’s the picture to carry with you. The return you earn as an investor can differ dramatically from the return your investments earn — and the difference is largely a behaviour gap, created by emotional decisions. Fear and greed push you to sell low and buy high, and both disguise themselves as good sense. The most painful mistake is selling in fear near the bottom and missing the recovery. And the antidote to all of it is not a smarter strategy but a steadier temperament — decisions made in calm, a plan you stick to, less obsessive monitoring, an understanding that declines are normal, and often a trusted, objective partner to keep you steady. None of this requires financial genius. It requires self-awareness and discipline, which are within everyone’s reach. The calm investor, over time, tends to keep more of what their investments earn than the clever but anxious one. That’s the quiet secret. If you’d like help building the kind of plan you can actually stick to — and finding an advisor who can be that steady presence for you — the person to work with on your investments is a CIRO-registered advisor, who is registered to give investment advice and can look at your specific situation. What I can offer here is the principle that underlies it all: the greatest investment skill isn’t knowing more. It’s staying calm when everyone else is losing their nerve. Master that, and you’ve mastered the part that matters most.

Book a free, no-obligation Discovery Meeting →

Important Disclosure: This article is general financial education and is not a recommendation or personalized advice. It does not recommend any specific investment or strategy. Markets involve risk, including the risk of loss; past market recoveries do not guarantee future results. The author, Jose Salloum, is a licensed insurance professional (Financial Security Advisor), not a CIRO-registered investment advisor; investment and securities advice must be obtained from a CIRO-registered advisor. As a licensed insurance professional, the author may receive commissions on insurance products.

Frequently Asked Questions

Why do investors underperform their own investments?
Because the return an investment earns and the return an investor captures can differ — and the investor’s is often lower. The cause is behaviour, not the investment. Investments don’t panic; people do. Buying when markets are high (excitement) and selling when they’re low (fear) is the opposite of what builds wealth, yet it’s the natural emotional response. A CIRO-registered advisor can help you stay steady when emotions pull the wrong way. General education, not investment advice.

What emotions cause investors to make mistakes?
Fear and greed. Greed (often felt as excitement or fear of missing out) tempts buying when prices are high. Fear tempts selling when prices are low. Both push investors to act at the worst possible time — and both disguise themselves as good judgment, so they don’t feel like mistakes in the moment. Recognizing them is the first defence. A good CIRO-registered advisor can be an objective voice when emotions are loudest. General education, not a recommendation.

How can I avoid emotional investing mistakes?
Build systems so emotions don’t make your decisions: make a plan in calm times, understand your real risk tolerance before a downturn tests it, check your investments less often, treat declines as normal rather than emergencies, and work with someone who can be a steady, objective presence. Managing behaviour — not just picking investments — is one of the most valuable things a CIRO-registered advisor does. General education, not personalized advice.

Does doing nothing really beat active trading?
Often, yes. Every trade requires two correct decisions (when to sell, when to buy back), and each is a chance for emotion to interfere. Reacting to every headline gives emotions repeated openings; a sound plan left largely alone gives them fewer. That said, planned rebalancing differs from emotional reaction — the skill is telling them apart. A CIRO-registered advisor can help you distinguish a sensible adjustment from a panic move. General education, not investment advice.

Continue Learning

To go deeper, understand your own Risk Tolerance before a downturn tests it, learn why Sequence of Returns Risk makes timing matter in retirement, and see how to find a steady, objective partner in How to Choose an Investment Advisor in Canada.