The market is always right; the only thing that is wrong is the self-righteous prediction. When making money, respect the market; when losing money, reflect on yourself. The market is the teacher, and the account is the exam paper.
Beware of greed during peaks, and restrain luck during troughs. True opportunities often hide in places that no one pays attention to, rather than when the crowd is clamoring.
Cutting losses is not failure; stubbornly holding on is the abyss. Discipline is the armor of trading; emotions are the fuse of losses.