A wave of market, one trade, regardless of success or failure, in your long career, among millions of trades, is like a drop in the ocean. Do not become complacent after a single success, nor be overly disappointed 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 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.