...What do you think? What other tips are there for becoming a successful holder?
The problem of every investor is that he does not fully implement all the tips that the OP has published. This can happen either due to ignorance or in cases where the investor specifically violates them, hoping to increase his deposit. But it can definitely be said that the holder should not sell his coins when they have reached the minimum price.
Well, expect that even OPs tips are good and valuable, there will always be investors that will follow their own rules and stick to them because they think that they are way better than these posted tips. Either because of their ignorance, or they dont just trust other peoples advices and opinions. For me, its good too as they will learn their lessons eventually when they start losing in the end.