99% of things simply doesn’t matter and doesn’t add anything to the bigger picture. It’s fine to be a control freak, but the moment you try to control the uncontrollable is the moment you lose.

Before you stress about changing the world for better, make yourself happy first. Everything else is secondary, because if you’re not positive and happy inside, you’ll burn out yourself and people around you.
Put yourself first and be selfish unless you’ve honestly found your place. That’s how you build a solid foundations which you can later use to help other people and make world a better place.