How to manage your psychology in the stock market

Michael Taylor looks at how to manage our psychology in the stock market.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Many investors believe that other investors are their competition. 

They’re wrong.

Their only competition is themselves. Stock market investors go through a huge range of emotions, from excitement and greed, to fear and self-loathing. But fear not – there are several ways that we can manage our heads in this game and not make some common mistakes. 

Have a self-imposed limit on position size

By having a limit on how big our position is, we are able to stop our greed from ballooning out of control. When we spot a good opportunity in the market, it’s natural that we want to put our best ideas to work there. But this is dangerous – what if we are wrong?

Using a limit on position sizing will prevent us from being burned should we be wrong. If we do pick a winner, then one stock can easily become a large percentage of our portfolio – meaning that our portfolio’s performance is now correlated with that stock. With a position size limit, we’ll be forced to trim the position and bank profits as the position size increases. 

Look for reasons to not buy 

We all love buying stocks. But what we should be doing is looking for reasons not to buy the stock right from the start. That means doing some digging, and looking at whether management are aligned with shareholders. Check the director salaries. Check the director shareholdings. Are they clock punchers? Or are they well motivated to create and deliver shareholder value?

It’s also worth looking at what the company actually does, and going out to speak to its customers. If the customers tell you that the product is nothing special, then that means it is easily replaceable. And if it’s easily replaceable, then it has no moat. 

Check the company’s moat

If a company doesn’t have a moat, then it offers nothing to protect itself from copycats. That means anyone could set up as a competitor and erode our target company’s margins. Always check for the moat and see how strong it is.

Understand why you’re buying and when you’d sell

According to Sun Tzu from The Art of War, a good general wins first then battles. That is exactly what we should be doing with our investments.

If we understand why we’ve bought, then even if the price is showing our position as buying in the red, then we must remember why we bought in the first place and not get scared and shaken out of our position. 

We should also know at what point we’re happy to sell. If certain aspects of the business change, then we know we should sell our shares in the stock. 

Know what our sell triggers are, and then monitor the stock. 

Views expressed in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Santa Clara offices of NVIDIA
Investing Articles

£5,000 invested in Nvidia stock 6 months ago is now worth…

Nvidia stock's taking a breather at the moment. But it could be getting ready for its next move higher, says…

Read more »

British coins and bank notes scattered on a surface
Investing Articles

I hold Lloyds. Is it madness to buy Barclays shares too?

Harvey Jones is keen to buy Barclays shares but wonders whether he's simply doubling down, given that he already holds…

Read more »

Asian man looking concerned while studying paperwork at his desk in an office
Investing Articles

It’s time we all took a long, cold look at the Lloyds share price

The Lloyds share price has been good to Harvey Jones, making him a huge fan of the FTSE 100 bank.…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Warren Buffett didn’t retire early. But could his investing wisdom help you do so?

Warren Buffett's wisdom from decades of stock market investing is actionable even for a modest investor who simply aims to…

Read more »

Young female hand showing five fingers.
Investing Articles

5 compelling investment ideas for a Stocks and Shares ISA in 2026

Edward Sheldon discusses some ideas to consider for a Stocks and Shares ISA and highlights a UK stock that could…

Read more »

Man writing 'now' having crossed out 'later', 'tomorrow' and 'next week'
Investing Articles

Is this the best time to buy shares in a long time?

Earlier this week, Bill Ackman stated on X that this is the best time to buy shares in a long…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

£1,000 buys 35 shares in an incredibly reliable FTSE 100 dividend stock

Despite falling 72% from their highs, shares in this FTSE 100 company have been an incredibly reliable source of dividend…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

This is what Warren Buffett has to say about passive income — and I’m listening!

While searching for new ways to earn passive income, our writer takes to heart sage advice from the Oracle of…

Read more »