I'm not on the level of investing 10k, 20, 30 50k, in alt coins. Getting a few hundred here and there and working my way up and diversifying is what keeps me afloat.
One thing I'll say is don't too much look at other peoples gains, and loses and compare yourself. Like people becoming millionaires off investing 20k in random things probably means they were already pretty ok financially already anyway, doesn't mean you'll strike it big and just because you see people going broke doesn't mean you will, but you will take L's....
These coins alts will probably pull back something FIRECE in the future, just take some profits, enough to where your ok if it goes x10 from where you took profits and ok if it dumps x10. It's probably the hardest part of trading for me.. taking profits. Ironically enough.