Position management is all about posture, if you don't feel comfortable with your posture, you can't have a good mentality.
When you gamble with a large position, you will inevitably be anxious. When you lose, you want to stop the loss quickly, because it hurts; when you win, you want to take the profit early, because the profit retracement is very uncomfortable, so selling high becomes a common thing.
In short, you can't hold on.
Today I heard the most classic sentence: "Why is the holding time short, because it was stopped out, or took the profit actively."
The growth space is cashed out, it needs the power of time, but the holding experience of a large position will inevitably conflict with the long-termism, resulting in not being able to withstand the fluctuations.
