it is in the human nature to become very greedy, speacially in money. the more the merrier. so that explains why people mostly died with regrets of being too busy with money making that they often left their family out.
in crypto, it is also greed that came into factor that leads many of us to just hold, and hoping for bigger returns. we must be contented with what we have earned. first, we must set our goal, lets say we wanted to earn 30%. when we reached that goal, we should stop. this is quite hard to follow, but we need to.
It is true that humans are greedy by nature but you are not taking into account the nature of cryptocurrencies, why you should settle for 30% in profits when we know that you can earn a lot more than that, it doesn't make sense to me especially since I know that I can hold my coins despite everything that happens, I didn't sold my coins at 20000 simply because I did not thought it was a good business, in a decade that price will be seen as a bargain.