Don't care about other peoples stupidness,
Don't care about the self centered behaviours,
Don't care about their superficial mind,
in the end, it's the thing that they represent, but if you don't like it, you don't need to deal with it if you choose your own path.
You get old with yourself, and the ones you choose to surround yourself with.
Lacks of others should make them doomed, not you.
Don't carry other persons mistakes as your own burden, they don't belong with you.
Free yourself, let them be, and be the way you concider to be correct.
Only when you know how to reject the dislikable, and only when you know you are the way you judge to be right, only then you will find true peace in mind.