Passion for a practice or a subject comes from your investment of time and energy. Whatever your passion turns out to be is a combination of what you’re into, your circumstances, and what happens to fall across your path, added to what you decide to spend your time on and what you’re willing to take risks to do more of, with a just a tiny dash of natural talent.
Jessica Abel on deciding, not discovering, your passion. (A good deal of this applies to vocation and profession alike. Discipline matters more than destiny in 99% of endeavors.)