What I love about how my career has gone up to this point is that I've always, always put my head down on my pillow at night, and I've been able to say that I've done, honestly, what I've felt like I wanted to do. And that's really all you can hope for in everything you do.
A novel's whole pattern is rarely apparent at the outset of writing, or even at the end; that is when the writer finds out what a novel is about, and the job becomes one of understanding and deepening or sharpening what is already written. That is finding the theme.