The Mistakes I Made Before I learned That Investing is 80% Psychology
Nobody tells you this when you start investing.
They teach you how to read a balance sheet. How to calculate a PE ratio. How to build a discounted cash flow model. What they don’t teach you is what happens inside your head when the stock you just bought falls 30%, and you have to decide what to do next.
I learned that part the hard way. Several times.
The Big Name Trap
Early in my investing journey I bought a stock because it was cheap. Not cheap in the way a rigorous analyst means, not cheap relative to intrinsic value, not cheap relative to the quality of the business. Just cheap because the price had fallen and the name was big.
A well-known company with a recognisable brand. I figured the name alone was a kind of safety net. Big names don’t disappear, right?
What I missed was that the fundamentals were deteriorating. The price had fallen for a reason. I held on, not because my analysis supported it, but because I didn’t want to admit I’d made a mistake. The stock kept falling. I eventually sold at a loss, not because I had a clear reason to sell, but because I couldn’t take it anymore.
The lesson came later, quietly: price going down is not a reason to hold. Only the fundamentals are.
Waiting to Break Even
This one is more embarrassing to admit.
I bought a stock. It fell. I waited — not because I believed in the business, but because I needed the price to come back to where I bought it so I could sell without feeling like I’d lost.
Eventually it did. The price recovered. I sold immediately, relieved.
Then I watched the stock double over the next two years. It was the beginning of a bull market and I had just sold my position at breakeven because my ego needed to feel like it hadn’t made a mistake.
The stock didn’t know what I paid for it. The market doesn’t care about your entry price. But I was making decisions based on a number that only existed in my own head.
News as noise
When I first started investing, every headline felt like information.
A disappointing earnings report. A negative analyst note. A macro scare. Each one triggered a response, sometimes panic, sometimes doubt, sometimes the urge to do something just to feel in control.
It took years to understand that most news is noise. That the market’s reaction to a headline is rarely proportional to the actual impact on a business’s long term value. That a great business reporting one bad quarter is almost never a reason to sell, and a falling stock price on heavy volume on a day when nothing fundamental has changed is almost never a reason to panic.
Learning to distinguish signal from noise is not an analytical skill. It’s a psychological one. And it takes time, usually measured in mistakes.
The loneliness of conviction
This one surprised me the most.
When you make a decision based on your own analysis and hold it through volatility, success feels strangely lonely. You start looking for affirmation. Did anyone else buy this? Are other investors talking about it? Is anyone else holding through this drawdown?
The crowd becomes a comfort blanket. If other people are in the same position, the decision feels safer, even if their reasons for owning it have nothing to do with yours.
But here’s what I eventually understood: the right decision has nothing to do with the crowd being with you.
In fact, the most interesting opportunities, the ones that compound the most over time, are almost always the ones where you’re making a decision the crowd hasn’t fully made yet. Waiting for consensus before acting is just a sophisticated way of buying high.
Conviction by definition means you've done the work independently. The crowd agreeing with you later is nice. It's just not relevant to whether you were right.
What Changed
None of this clicked overnight. It accumulated slowly, through losses, through missed opportunities, through regret, through watching positions I sold at breakeven turn into multi-baggers.
What eventually changed was simple: I stopped asking “what is the market telling me?” and started asking “what does the business tell me?”
The business doesn’t know what the stock price is. It doesn’t care about the macro environment. It just keeps doing what it does, compounding value if it’s genuinely exceptional, or slowly deteriorating if it isn’t. Your job as an investor is to understand the business well enough that the price movements stop feeling like information.
That’s the whole game. Everything else is just noise you have to learn to ignore.