A wave of market movement, a single trade, whether successful or not, is just a drop in the ocean among the millions of trades you will make in your long career. Do not become complacent after a single success, nor be overly upset after a failure.

A calm mind is always the strongest weapon for a professional trader. When you become impatient, reckless, fearful, or anxious due to market fluctuations and asset changes, whether you profit or lose, you have already lost. The market's waves will amplify your emotions infinitely, and after you become exhausted, they will deliver a fatal blow.