When should long-held alt coins be sold? When to sell even when we are in profit? That doesn't make sense. Let me know if there is a suitable alternative to this issue.
In as much as no one can actually tell you what to buy and when to buy, since most of the times we tend to follow our minds, in the same way, no one can tell you when to sell. Although most times, many people follow a call or signal on what to buy for long term, but however they hardly get a signal when to sell because your satisfaction point might be different from that of another.
However, just like you said, when to sell an altcoin when you are already in profit, the key word is profit, therefore if you are in profit you can sell anytime you want because you don't know what will happen next. In addition to this, I think the best way to go about it is by selling a certain portion at a certain price while making sure profit and capital is out, then hold some, just in case it pumps massively again.
