SD - I haven't read much of it yet, but I'm going to stick my neck out here and recommend "Relationship Rescue" by Dr. Phil. I think it's going to be a good addition to Michele's books as a resource. From what I've read so far, he has a very similar viewpoint to Michele, is also very much pro-marriage, and seems to have some VERY worthwhile things to say, as well as some VERY practical advice. No, not advice, more like a marriage-workshop-in-a-book, but it looks like if you do the exercises and do the homework, you can learn a lot, and it may help.
One point he makes right up front, which I think is very true, is that the only person you can really influence and change is yourself. Sometimes changing yourself, and your viewpoint, is a catalyst for further change. NO, I am not talking about Beau11's "solution". Get the book, and read it, and decide for yourself - you don't have to risk much money...