Everyone's common flaw is that anyone involved in trading hates losses. Once long-term profits are affected by drawdowns, many people can't handle it. At this point, emotions take over, and the market will teach you how to behave. Slow is actually fast—this is not just a warning. Second, seeing others make money while missing out on opportunities can also be unbearable. Those who have persisted in this market for a few years won't be afraid of missing out; only the rookies will. Third, inability to hold onto positions is also a common problem. Every trader has another side, which is like Xiao Ming in the story about quitting stock trading. You need to learn to comfort Xiao Ming and not let him control you. Fourth, believe in your judgment and pattern, and don't let the numerous market factors change your approach.