I'm very confused and lost...any help ?

I'm young and have a problem. All day, every day, all I think and breathe is why I'm here. I want to be good, and I want to know what to do that will bring me happiness and peace. What do I do, how I'm doing it, what I might be doing wrong...I used to be christian, but now I am completely lost. I don't know what to believe in anymore. I had a death in the family when I was younger and that sprouted all this distress. I read about Buddhism which helps a lot. Karma and reincarnation are things I believe in. I try to be vegetarian but my family makes it so hard to do so. Any answer that says "You're young, don't worry about it" is not welcome. Is there anything I can do ? I want to just find a group of like minded people and live there forever.