It's always best to stay far away from those kind of people, they will ask for your help, but when you need their help, you will just have their backs pointed at you.
They are selfish at heart. There is nothing that can be done about them.
Just forget about those kind of people and live as if they didn't even existed... Be a selfish person too.
What happened to you...? It sounds like you're jes' wanderin' around depressed for no reason.
You gotta explode? Then do it safely.