Just want to keep the book thread going. Here's another one I recommend:

Rebuilding: When your Relationship Ends. by Bruce Fisher and Robert Alberti.
I bought this book and reach into it from time to time for support and understanding. It documents the emotional landscape of divorce and recovery, seems to know just what you are feeling, and has good advice for moving forward. I find the book realistic, yet optimistic. I am glad I bought this one.