I'm sorry to come back and bug you again. But I found the book on Google and I wanted to share in case you were interested. The book was called "The Best Question Ever" by Andy Stanley. It completely changed my life; the way I approached my relationship with my ex and my recovery from addiction.
Anyway, I'm pretty passionate about it and I was just sharing what worked for me. :-) whatever you decide, I hope it works out for you and your family.