Rule of the Bone by Russel Banks.

The way I feel about every book is this: you don’t finish it, you abandon it. All of my books have in some sense failed, otherwise I wouldn’t write another one. If I wrote the perfect book, I wouldn’t have to write again, and I wouldn’t want to. That’s not true for everyone, but it’s true for me. I could walk away then. But so far I haven’t managed to do it.

- Russel Banks

I just discovered it’s being made into a movie.