I'd like to recommend a book for marriages of all types: new marriages, broken marriages, hurting marriages, and even great marriages:
Love and Respect by Emerson Eggerichs.
You can find out more about it here at the Love and Respect website:
Mitch and I have been leading a Sunday School class at Calvary Community Church showing the L&R videos. They are wonderful. This is our 4th-5th time watching the seminar. We highly recommend it to everyone.
"Nothing changes, yet everything changes."