The story of my life

My parents are divorced. It is very hard, but as time goes on it gets easier. And I think I'm a bi, well not that much anymore, but still I don't have the guts to come out. My dream is to become thee greatest martial artist and so as a philosopher, my mom is against it. People say I'm weird and only my friends understand me. What should I do? Should I follow what they say? or follow my heart?