I know a guy. He doesn't tell me but I know that he went from rags to riches trading forex. He closed it when he made 20 percent a year after the investors had been angry at him and had his own hedge fund. They were constantly calling him.
But I know that when he started he did all the noobie mistakes. He trades in the Asian session. Only uses price action. Closes his rankings. No overnights. Consistently utilizes an emergency stop loss but doesn't care about risk reward. He uses stop reduction for circumstance. Brexit, korean missive, Democrat. But closes the position when the trade doesn't go his way. He told me that his prior flaws was that he had been stubborn. He wanted to win. And he told me that you are a winner once you shut a trade once you find the market change, lose or win. Soros used to perform the same.