The fact is that when it comes to the crypto space there's no specific time that is specific and good enough to sell because the fact is that the best way you can actually enjoy and benefit from crypto space is to hold your coins as long as you can become crypto currency especially Bitcoin is one coin that has great prospects of growth over a given period of time so any one that sells his coin in a short time and miss out on the the profit because the coin made a steady rise has its self to blame because that person was not patient enough because the key in the crypto community is to hold as much as you can
Buddy first and foremost you have to learn how to different between those shitty things and Bitcoin and beside we are not in anyway discussing about shitcoin or altcoins here unless you want give example of coins that one should not go for in terms of investment then you can mention them, buddy you don't have to even think of investing or having the mindset of holding those shitty things that' are not long-term assured, I think you need to learn a lot so that you will understand that after bitcoin it's still Bitcoin no other shitty project to compare with it, my advise please, I think you should understand that Bitcoin is on it's own and whenever you mention crypto don't expect anyone here to think that you're referring to Bitcoin and all those shitty things.
If you want to talking about Bitcoin be open to it, yea Bitcoin is the only digital asset that has the ability to appreciate in a long-term that's if an investor abide by it's concept which is buying continuously with the amount that you can afford steadily and consistently and hodl for a long-term.
Holding for a long-term should be the major approach of a bitcoiner who understands what long-term entails but as for the crypto you keep mentioning that's not part of the process.