In the past few weeks, ETH has been falling, causing many people to be nervous. Some people sold their ETH at that time with the thought: "ETH is dead already."; "ETH will disappear." or "ETH will become a coin". And when ETH rose again they regretted "ETH has come back", "ETH will break in the next few months," "How stupid when I sell ETH."
I wonder if they really love ETH, love this crypto market? Or is it just trending? Do they have enough knowledge, psychology here?
What do you think about this?

many people are not strong enough to face problems, so many mistakes that occur such as hurrying to sell and finally regret it
not insufficient knowledge, because sometimes smart people can be wrong. in my opinion the most important thing is mental, confident, and patient that is the key to being here