How to face greed in trading?

Greed refers to the excessive pursuit of profits or unrealistic returns in trading. Sometimes we have already made good profits, but we are always unwilling to reduce or close our positions. We always think that the price will continue to rise. I will never make a profit until xx. As prices fall back, you start to get anxious again. Why didn't I sell at that time? I wasted so much time on holding positions. This behavior is wrong. In the face of profits, we should stop profits in batches. Although profits may be reduced in the end, it is always a good thing to be safe!