Trading can be a tough and unforgiving profession, and many traders learn some harsh lessons along the way. Here are 21 brutal lessons for traders:

1. The market is always right, and you are not.
2. There is no such thing as a sure thing in trading.
3. Never risk more than you can afford to lose.
4. Emotions are your worst enemy in trading.
5. Greed can be a dangerous motivator.
6. Fear can cause you to miss out on profitable opportunities.
7. Technical analysis is not foolproof.
8. Fundamental analysis is not always reliable.
9. Never try to predict the market.
10. Don’t get caught up in the hype.
11. Trading is not a get-rich-quick scheme.
12. Don’t chase after losses.
13. Cut your losses quickly and move on.
14. Keep your ego in check.
15. Don’t let past successes or failures cloud your judgment.
16. Success in trading requires continuous learning.
17. There is no substitute for hard work.
18. Patience is a virtue in trading.
19. You don’t need to trade every day.
20. Trading is a marathon, not a sprint.
21. The most important lesson in trading is to always manage your risk.

These lessons can be difficult to learn, but they are crucial to becoming a successful trader. Keep them in mind as you navigate the markets, and never stop learning and growing as a trader.