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.
When you are lucky and you need the money. Don't be too greedy in trading. If indeed the profit has met the target of your plan, you can sell it. Instead of continuing to wait until it's too late, it's better to be grateful if that day can get maximum profit.