We have two books to recommend and more on the way.
This book is the perfect mix of stories from real couples and guidance. Easy to read and a ton of great advice. I laughed at quite a few of the stories, they hit a little too close to home. My wife and I are hoping to read this one together soon too :).
This is a fantastic book about the gritty reality of trying to get a business off the ground, and the impact it had on her family and relationship with her husband. The author is Meg Hirshberg, who is married to Gary Hirshberg the founder/CEO of Stonyfield Farm.
My wife and I read part of this together and it brought up some really helpful discussions :).