How to loss/gain in crypto

I used to wonder if may be crypto is spiritual which so many people will think as well. Imagine buying a coin it dip selling it move higher. How do one call this. Been wonder why as well. But I think this happen to many of us. To my my understanding of this I think greed unable to hold fear is the altimate motive behind this. It’s a simple logic. I have sold to dip many time after buying I later release one need to patient to gain in this market. Literally as the word saying if you can’t hold you can’t be rich.