If we stick to a target price then we will need to hold for long term investment and eventually it will decrease our investment risk.
but most people do not understand this.
The fact is most trader become greedy when they see the price jump, and I already experience that before in my beginning of trading. At that moment, I am missing the best moment to sell some coins at the very highest price, and I can make a big profit, but then I realize that the price cannot still increase, but that is too late. Although that is too late, I can make a profit, but that is not bigger than the last time of the highest price.
From that experience, I always try to remember to close the trade whenever I see the very highest price, so my profit can be at the top rate. That is one of the best lessons for me that I always keep in my mind.