Patience is a virtue and that is what many people lack. Crypto investment sometimes can be very frustrating if you expect a quick return. The most important knowledge anyone can have in crypto is the possibility of a long term duration before maturity. Knowledge is very important since various crypto investments take different forms.
You need to understand that you need to learn the market trends. Sometime last year I sold one of my coins in a rush just to watch the price double in less than 10mins later.

Knowledge is crucial and patience is needed in order to obtain the required knowledge.