I really had to decide why I was writing. I had no interest in going back to law; I very briefly - for about six hours - considered going to get my MBA, but in the end, I realized that the only work I really wanted to do was write.
The smartest thing I did in law school: asking my future wife to go out dancing with me. The smartest thing I did when practicing law: quitting. The smartest thing I've done in writing: following my own head and writing what I wanted to write, and nothing but.