There is a fine line between being angry for something and just being angry. The latter means you have issues in the body.
Don’t think that you know any better, that you know the world. First, accept the fact that you are a little part of it always, no matter how big you get. Second, its not always dark and grim, try making yourself happy sometimes and that does not include just the joystick you got down there! You need to see the light instead of sleeping. Third, there are other forces that are bigger than you, its called: humility.
Don’t become an old kook, a philosopher. Live young, free and full of curiosity.