To be successful you must be passionate in an area. It also helps a great deal if you have a strength in that area as well. I might be very passionate about painting, but if I have zero skill at painting then I’m better off choosing a job that taps a different passion (or passions).

One of the best ways to know what you're good at is to ask others who have worked with you. Tell them that you’re trying to understand yourself better. What do they think your strengths are? If you want a full assessment, you might also ask them where you’re weak.

Having a clear idea of your passions as well as your strength and weak areas will help you to choose the best path for you.