The market is like an ocean – it moves up and down regardless of what you want. You may feel joy when you buy a stock and it explodes in a rally. You may feel drenched with fear when you go short but the market rises and your equity melts with every uptick. These feelings have nothing to do with the market – they exist only inside you.

The market does not know you exist. You can do nothing to influence it. You can only control your behavior.

The ocean does not care about your welfare, but it has no wish to hurt you either. You may feel joy on a sunny day, when a gentle wind pushes your sailboat where you want it to go. You may feel panic on a stormy day when the ocean pushes your boat toward the rocks. Your feelings about the ocean exist only in your mind. They threaten your survival when you let your feelings rather than intellect control your behavior.

A sailor cannot control the ocean, but he can control himself. He studies currents and weather patterns. He learns safe sailing techniques and gains experience. He knows when to sail and when to stay in the harbor. A successful sailor uses his intelligence.