In my opinion, the best time to sell is when the market price of the coin is 20%+ higher than the market price at which you bought the coin. Dont wait till the market price is 95%+ before you sell. That only happens when you got your eyes glues to your machine 24/7. Dont be greedy... Make a little profit and grow it over time. Cryptomarket is growing and full of terror! Be careful
Greed is generally a terrible vice. It will never bring a person anything good. Therefore, from this feeling you need to try to get rid of. Its better to go slowly and confidently towards your goal than to act impulsively and greedily. So I fully agree with your statement.