It is hard to rationalise or explain why you love what you love. But I have always been interested in science and maths, and in high school I was struck that you could use maths to understand nature and science. ↗
You don't have to make, you know, $3 Million dollars a movie, or $20 Million dollars a movie, but if you make a living doing what you love doing, then that's success to me. ↗