You decide of your own universe. How? All that disagreements and pain is going on only in between your two ears. Notice how when we are angry nothing else is affected just us? Once your heart is at peace, it will be easy to control your degree of anger.
When you truly have peace at heart. Then you understand that most of what you want has no long-term purpose, but, to feed greed. If you are truthful and wise, then dedicate yourself to your friends, family or whatever you may believe in. No matter what it is, if you have good intentions and that it makes everyone happy. Then be it, do it for a higher purpose, not for nonsense selfish thoughts.