This is a pretty common mistake in trading because we are controlled by our greed. I think all of us experience this and that we want to earn more. That is why others are just going to hit and run or just set a daily goal and if they achieve it then they will not trade again on that day because, I don't know what the explanation behind this , but the market will kind of take those profits from you if you are still trading even if you already hit your goals.
That is called a strategy, people with strategy will focus on just that and they will buy and hold and sell when the time comes and that is how they make their profit, they are smart people and I try to be like them as much as I possibly can.
However, there comes a time when things change a lot and we end up with something much worse, which I believe could be a bit of an issue in the long run, the "fools eye", I don't know what it's called in English but a person who is mesmerized by the beauty of something and can't move or talk, you see it growing higher, and you are seeing how much profit you are making, and you get stuck and can't do anything, those people make the biggest loss.