I haven't learned anything new. Just the good old strategy - HODL

Also, I've realised how far I was from my original strategy - collecting more BTC by trading alts. I was way too excited about "the hottest and cheapest altcoins". I should have fixed half of my profits in BTC and half in fiat. And leave the original deposit in alts.

But still, I remember the main rule - DON'T SELL IN [20%+] LOSS. Unless you're dying and want to spend all of your money. Or unless you planned stop-loss limits beforehand and that is a part of your strategy