I think it's better to sell it when there is a profit, whether it be big or small. In my opinion, don't expect much from the benefits that can be obtained, try not to be greedy in seeking profits.
sometimes greed in us always happens, hoping that what we hold the coin will be even higher in price. but it's always passed with an adequacy that it gets. a successful self-study. there are still many coins that have the potential to give us profit. I'd rather take enough profit but always be given smooth.?
A lot of depends on potential of the coin and how useful it is.
Cryptocurrency is very volatile. It is good for trading.
But for long term investment coin must be useful.
It is necessary to evaluate the future potential of the coin.
Now there is a big demand in nature protection, that is why the project that protects the planet from pollution like this
https://twitter.com/liquidearth_nft/status/1502269439785541633 has a good potential for investment.