1. Never, ever, ever, in your right mind think that you can rely on another human being.
2. Be independent, completely independent. This means:-
a) don't ask for help or even organize to share responsibilities with anyone.
b) don't ever let yourself break down due to someone's else treatment of you
c) don't ever feel like it's a bad thing that you're alone.
d) keep yourself at a distance from others
e) don't fall in love, because this defies all the rules above.
in other words, be a fucking hermit and make sure you can do everything because no one else in this entire world gives a shit about what you do. whether you fail or pass. It's absolutely nothing.