I have seen many people's who are in profitable situation but still waits and become greedy for more profit but eventually they loose the opportunity of profit & when the assets goes down they sell in loss. This is the biggest mistake I have seen in newbie Members. So I would always advice that try to book PROFIT everytime at specific intervals & yes if u wanna hold for long term then try to make another portfolio of long-term coins, and keep them in hardware Wallets where u will hold them for 5years without Trading in them.