what you believe and how you are depends on who you are. If you are continually angry and upset, you attract that kind of person to yourself. Your life is coloured by anger. A more loving,kind person will attract kind, loving people into their lives. Aggressive people will attract aggression. The world around you reflects your inner state.
Sometimes even the pets you own reflects the kind of person you are. Look around you and see if you can spot an aggressive dog. Is the owner of that dog also an aggressive person?