It's always having that feeling because I don't want to let go of my coins. But what I can do if I need the money to pay for the things that I'm obligated to?
Knowing when to sell isn't a problem but when you do, you should take it lightly and won't regret just after doing it.
Why regret it? Selling is a result of your right investing. If you sell at a profit, it means that your calculations and analysis have paid off. You get something real, not ephemeral, like when you hold cryptocurrency. Of course, there are situations when the sale could be made later with more profit. But the money you cashed out may already be working. Whereas those that lie in the asset are inviolable for some time, they cannot be touched and activated.