Just a little intro. I have been divorced for almost 6 1/2 years. So as you know, there are no guarantees here. Also, I take a different approach than many here. Some will tell you to read everything you can get your hands on. My advice is to read a few, get an idea where things are, then be the best you can be. Also, I don't dwell on MLC like many here. Again, get an understanding. Dwelling on it will drive you nuts.
DB is a self-help book with an obvious bent towards healing a relationship. Good luck. Stay positive.