If you were a god, what would you do?

I'd make it so that anyone who tries to hurt someone/something else would be the one to get the damage. Imagine how frustrated people would get.

Get into a fight? Punch yourself, idiot. Some guy trying to rob you, what can he do? If he tried to stab you, he'd only stab himself.

Would be pretty funny to watch from a distance, and eventually people should realize that violence won't work on anyone but themselves.