I went through a difficult divorce and it caused me to start reading books about relationships to try and figure out how problems can be avoided next time. The best book that I found of the subject is "How to get the Love You Want" by Harville Hendrix. In the book he talks about how we attract someone who has some of the negative traits of our parents. It is a real eye openner. When you combine that with the blame game, and the fact that when some people are unhappy, they think that it is the fault of others intead of looking in the mirror, you have the recipe for a high divorce rate. I would highly recommend the book.