I was always writing stories, even as a kid. I always wanted to be in the plays and do that sort of thing. Screenwriting started to really appeal to me because the idea of being able to make things that many people got to see became very captivating.
Even if the experience in my stories is not autobiographical and the actual plot is not autobiographical, the emotion is always somewhat autobiographical. I think there's some of me in every one of the stories.
I always have to start with a character that I can really hook into, and then build from there. I have writer friends who start from a world, an object or some kind of concept that they then hone and widdle into a story. But, for me, it has to be a character that I can really sink my teeth into and live with, for months and months.