Stop-loss may seem simple, but in reality, it's all about human nature.

Basically, there are two paths: one is the deadline you set for yourself, and the other is the dead end the market gives you.
Self-imposed stop-losses are really about understanding your own capacity. How much loss can you bear? You should have figured that out before entering the trade. Don’t get into the trade and then start to hesitate—that’s when your mind is already in chaos. If you’re aiming for a breakout and rushing in, you might want to keep your stop-loss small, cut your losses immediately if wrong, and avoid wasting time with the market. If you can tolerate some volatility, then widen your stop-loss to give the market some breathing room. But remember, a wider stop-loss isn’t about holding onto a losing position; it’s about leaving space for the trend.
The second type is when the market tells you: you’re wrong.
Anyone who trades breakouts knows that once the price breaks a key level, the trend has changed. That’s not about whether you want to move or not; it’s a must. That’s the market’s final warning. If you don’t act, you’ll be deeply trapped, your mindset will collapse, and your capital will be gone. Many people die because they refuse to accept that the market has turned against them, still comforting themselves.
Over the years, I’ve realized one thing:
A stop-loss isn’t about losing money; it’s about protecting your confidence.
How much you’re willing to lose reflects your mindset;
The market telling you to exit is about your discipline.
Self-imposed stop-losses protect your mentality;
Market-imposed stop-losses protect your life.
If you truly master this, you won’t be led by the market, but instead, you’ll be in control of your own trading.