When playing contracts, the more you lose, the smaller your risk exposure should be; the more you win, the more you should remember to withdraw your money. Many people do the opposite. When they lose, they increase leverage to recover their capital, and when they win, they increase their positions to try to solve the problem directly. The core of both is the same, gambling.

Behind gambling is the denial of the long-term race of life. It is the synthesis of infinite decisions. If the expectation is positive, you will definitely win if you keep making decisions. If you gamble with negative expectations, even if you win once, you will develop a bad mentality and you will definitely lose in the future.