It looks like selling your crypto for money when they are profitable is more safer than holding them for long, my point is only very few coins are worth holding for many years, if you still doubt about this go on coinmarketcap and look at most coins that came into this world in 2018 many of them have no volume again, the shocking one to me is gowithmi, a project that my elder brother praised so much at the time but today it's volume is not up to 50k, many projects will face same fate, be smart
Depending on what coin we hold, if the coin we hold is a coin that has no plans to develop its project in the future, then of course it is better to release the coin immediately when the price has risen above the purchase price because usually the coin will be slowly abandoned by investors, so makes the price and trading volume lower, but if we hold coins that have grown larger and have earned the public's trust such as BTC, ETH and BNB, holding them for a long time is the right choice because these three coins are proven to be able to provide higher returns. great for us in the long run.