Fear in trading does have two opposite impacts according to how we manage it within ourselves for the trade itself. Fear of taking risks can sometimes also prevent someone from taking advantage of great potential, which means it can make it difficult for someone to find steps to move forward and gain profits. But on the one hand, it can indeed avoid losses. But we are in a trade and taking risks is part of trading itself. Because in trading, loss and profit are two things that we will continue to experience. So I think being too afraid to take risks is not very good for a trader if he has made a thorough analysis but is too afraid to take steps.

But there is also fear that causes someone to forget basic analysis and be hasty in acting or taking steps. These are people who have FOMO (fear of missing out). Usually they are beginners who don't even understand sentimental analysis in the market.

And for me personally, I sometimes use fear to avoid high-risk altcoins which of course don't have clear fundamentals. I'm afraid to jump into any project that isn't fundamentally clear. So I avoided it. And this has had a positive impact on my portfolio. And I prefer to wait patiently for the right moment to enter an altcoin, such as waiting for a confirmed event or waiting for the chart pattern to form perfectly before entering to avoid the risk of uncertainty.