I started reading Margaret Atwood's books in ninth grade, and she's still one of my favorites. I had to share a quote from a recent CNN interview:
"Anybody who writes a book is an optimist. First of all, they think they're going to finish it. Second, they think somebody's going to publish it. Third, they think somebody's going to read it. Fourth, they think somebody's going to like it. How optimistic is that?"
Same goes for screenwriting. :)