In-depth analysis of regret aversion in trading and its inhibitory effect on rational decision-making. Explore how regret aversion can lead to decision paralysis, blind conformity, and excessive defense against future self-blame. Wmax behavioral finance series helps you identify the cognitive traps caused by regret. By establishing a decision log and defining acceptable errors, it guides traders to distinguish between bad luck and bad decisions, and rebuilds the ability to act rationally in uncertainty.