The weak are as angry as tigers, while the strong are as calm as water. Really powerful people have already given up their emotions. Emotions are like inner demons. If you don't control them, they will devour you. Emotional stability is a person's top accomplishment. Behind personal emotional stability is strength and structure. Don’t argue when it’s simple, don’t worry when it’s complicated. Don't speak when you're angry, don't make decisions when you're angry. Trading is not only a technical test, but also a test of a person's character and encouragement.