A wave of market movement, a single trade, regardless of success or failure, is just a drop in the ocean among the millions of trades in your long career. Do not become complacent after a success, nor should you be overly distressed after a failure. A calm mind is always the strongest weapon for a professional trader. When you become impatient, blind, fearful, or anxious due to changes in the market and assets, whether you gain or lose, you have already lost. The waves of the market will infinitely amplify your emotions, leaving you exhausted and delivering a fatal blow.