Some people say hold your crypto, some says sell immediately that holding for long is useless.
What do you believe and practice?
It depends on your belief in cryptocurrency and what cryptocurrency are you holding. If you think it has a long-term potential and you have the financial capability to hold it, then do so. However, if you think it will not survive in the long-run, then you better sell it if you think it's worth it to sell early. No one can tell you which to hold or not, it's all up to you, since it is your money.