My brother, who's a violinist now, was the real ham, the real performer of the family. His passion for the violin is the only thing that kept him from being an actor.
I actually play piano and violin, but I don't have a passion for it. It didn't make me wake up in the morning wanting to do it, or go to bed thinking about it.
Passion is energy. Feel the power that comes from focusing on what excites you.
Life is like playing a violin solo in public and learning the instrument as one goes on.