What i've learn from this 2nd cycle is never diamond hand cryptos out of top 10 (Btc,Eth i can understand) but others feel free to sell whenever you're up x2 x3 , it might do another x2/3 from there , but i can guarantee 100% you can buy at least 70-80% cheaper than you sold it .
I've bought a coin @0.30 it went to 8$ , but didn't sell , then the team decided to fight(one of the co-founders didn't like to have a token) project went into shit , now it's around 0.30 and i'm sure 100% won't go up again because team fucked up big time .
But always it's other story , when people sold Luna @3-4$ (friend of mine) , i sold all my Doge at 0.01$