The Seven Principles for Making Marriage Work by John Gottman is a practical book to help improve your marriage. It's a quick, easy read and you can get your spouse involved in reading each chapter and doing the activities with you.
Gottman makes a great case for marriage and exposes some myths about marriage as well.
People who stay married live four years longer than people who don't.
Half of all divorces will occur in the first seven years of marriage.
About 60% of all conflicts that occur in a marriage will remain unresolvable. Yes, happily married people still argue!
Men are more easily physiologically overwhelmed by marital conflict than are their wives.
In his sample, 94% of the time that couples put a positive spin on their marriage's history, they were likely to have a happy future as well.
Gottman is sometimes known as the divorce predictor. He has averaged 91% accuracy in determining whether a couple will stay together or divorce in three separate studies after watching a couple interact for only 5 minutes. He uses a lot of the observational data he gathered from the Seattle Love Lab- a house where couples would come and live and be observed by his team of researchers.