A wave of market action, a single trade—whether successful or not—is just a drop in the ocean among millions of trades over your long career. Don't get carried away by a single success, nor agonize over a single failure.

A calm mind is always the strongest weapon of a professional trader. When you become impatient, reckless, fearful, or anxious due to changes in the market and assets, you have already lost, regardless of profit or loss. The market tides will amplify your emotions without limit, exhaust you, and then deliver a fatal blow.