Firstly stop investing in crabs just because they have a very nice graphic and they get shilled to be the next big thing. Avoid falling for this crabs and you would not have issue just buying and holding onto fundamental projects like Bitcoin without having to bother about knowing when to take profit so you don't lose your investment capitals.

99% of the NFT currently existing will lose value in the next couple of years, while others will turn out to be scams. Know this and you won't be excited by them. They aren't no different from the hundreds of ICO that got launched in 2017 but are no where to be found in the market today.