whenever you see profit, take it.
I will keep saying it,
in crypto currency profit is the game, you can always take your profit no matter how small and you will be happier at d end
Yes, I do agree on taking profit as soon as you see some, but it still depends on how much profit will make you happy. Some see profits and grabing it as soon as they feel happy about it but also feel unsatisfied when they found out that their investment should have earned more if they haven't took that opportunity.
Like the OP said, profit matters most in cryptos, and all investors want is to earn large amount of profits but we do not know when will it happen. So we should always know ourselves, what will make us happy and satisfied. How much money do we want in order for us to be happy and satisfied.