Advanced trading is about psychological and behavioral games. This article analyzes the four major biases of loss aversion, gambler's fallacy, confirmation bias, and recency bias, reveals the opponent's trading logic of false breakthroughs, stop-loss clustering areas, and long-short mutual push, and proposes five training methods of practicing mentality with small funds, emotional cooling period, separate evaluation of decisions and results, review bias, and acceptance of uncertainty. The training is implemented in conjunction with the platform's small lot size and report export to help traders establish long-term advantages of stable execution in the precious metals market.