I personally do not sell anything. I decided to keep everything at the end of 2020. as much as 2020 there are two alternatives will have failed tutot or I will be very rich
It is a good decision to hold if the coin you are holding is a potential coin or as much as possible a stable coin like Ethereum or Monero but if it is a high risk coin, I suggest to cutloss if possible and buy back when the market is turning green.