Think about what interests you the most, for me it is music. For example, I am learning the piano right now, what do I need to do? I need to listen to piano music, look at books, make up my own music, learn other peoples music, work on my technicality and just enjoy the subject! My point is you have to absorb yourself in a subject to really know if you enjoy it. Your mind is incredible and I think the establishment wants to hinder us by saying we only use a certain percentage of our brain. Well I say that is crap! You got to trust yourself and have confidence!