We have different limitations of the posible earning that we can get from our altcoin holdings if you think the earning from your altcoins holding already satisfy you or it already reach the limit then grab the earnings some of the investor loss in their investment because they are greedy they wanted to earn a bery big amount and it end up to lossing, because the market is always changing from bear to bull and if you don't set a limitations then you will loss.
If there is a profit, in my personal experience, I hold it for a few hours and then enter again when the volatility subsides.
True, the folding pattern is sometimes one of the reasons why some profits cannot be enjoyed. The market is identical to provoking the emotions of traders to enter existing profits, usually after the first pump carried out by whales. The second trap usually takes quite a lot of victims because it is temporary.