1. Fear and Greed: Bitcoin investors are susceptible to bouts of fear and greed. Fear can lead to panic selling during price dips, while greed might result in FOMO (Fear of Missing Out) buying at peak prices
For me, among the list, this is the most common. A lot of people can relate here especially those new people and even those other people who have been in the market for a long time. But some people are already immune here and already know what to do if times like this will come.
I don't think anyone is immune to this even if they have been in the market for a long time. I mean greed, not fear. Fear is something that can be easily controlled if we have been in the market long enough and understand the market well and we are investing with what we can lose. But with greed, it is really difficult and not too many people can do it because everyone wants to gain high profits.
Although experienced people will have specific buying and selling goals, when they see their assets increase significantly, it is very difficult to follow the original plan, and it can be said that it is extremely difficult to control greed.