Why Successful Investing Is More About Behaviour Than Returns
Aug 01, 2026
Most things worth having in life don't come easily. Getting fit takes consistency. Building strong relationships takes time. Learning a new skill takes practice. And investing is no different.
I think one of the biggest misconceptions about investing is that successful investors somehow know what's going to happen next. They don't. The people who tend to achieve the best long-term returns aren't usually the ones who predict every market movement. They're the ones who stay calm when everyone else is panicking. Every few years, something comes along that makes investors question everything. It might be a financial crisis, a pandemic, rising inflation, wars, political uncertainty or endless headlines predicting the next market crash. When that happens, it's completely understandable to feel uneasy. We're human.
The problem is that our brains are wired to protect us, not to make us good investors. When things feel uncertain, we naturally want to do something. We tell ourselves that taking action must be better than doing nothing. But when it comes to investing, that's often where people go wrong. One of the biggest reasons investors don't achieve the returns they could have isn't because they picked the wrong investments. It's because they reacted at the wrong time. They invest more after markets have risen because it finally feels "safe", then when markets fall, fear takes over and they sell. Without realising it, they've bought high and sold low.
This is known as the behaviour gap, and it's much more common than most people realise. Research has consistently shown that the average investor often earns lower returns than the funds they're invested in. Not because the funds performed badly, but because emotions got in the way. Investing isn't just about choosing a good portfolio. It's about having the discipline to stick with it when it feels uncomfortable.
History tells us something that's both reassuring and easy to forget. Markets have always experienced setbacks. There have been recessions, crashes, wars, political uncertainty, rising interest rates and countless reasons why people believed "this time is different." Yet markets have continued to recover and grow over the long term. That's not a guarantee of what will happen in the future, but it is a reminder that uncertainty isn't unusual. It's simply part of investing.
The investors who tend to do well understand this. Rather than trying to predict what markets will do next week or next month, they focus on the things they can control. They build a globally diversified portfolio, keep costs low, invest regularly and stay patient. Most importantly, they stay invested. That sounds simple, but it's probably the hardest part of investing because it means accepting that there will be times when your portfolio falls in value. Nobody enjoys seeing that happen, but those temporary declines aren't necessarily a sign that something has gone wrong. They're often simply the price we pay for the opportunity to achieve better long-term returns.
I often think of it like flying. If you judged the entire journey by a few minutes of turbulence, you'd probably never want to get on a plane again. But turbulence doesn't mean the pilot has lost control or that you won't reach your destination. It's simply part of the journey. Investing works in much the same way. The short-term ups and downs can feel uncomfortable, but they don't usually change where you're trying to get to.
This is also why having a financial plan matters so much. When you know why you're invested, what you're trying to achieve and how your investments fit into your wider life, it becomes much easier to ignore the daily headlines. No one knows what markets will do over the next six months. No one. But over decades, history has shown that patience, discipline and consistency have rewarded investors far more than trying to predict the next market move.
The truth is that great investment returns aren't simply handed to us. They're earned. Not by being the cleverest investor in the room or by making perfect decisions, but by developing the mindset to stay the course when everyone else is tempted to do the opposite. Sometimes the hardest thing to do is nothing at all. But when it comes to long-term investing, doing nothing is often exactly the right thing to do. 🩷