Another way to find your passion is to track your 'envy'. Ask this question- whom do i envy the most due to the work they do? You will be able to list down multiple individuals. Then look at the work they do, and try those things. You might find your passion from that list. there is no silver bullet. But this question has helped me. I think passion is something for which you would create 25th hour in your 24 hour schedule!