In the field of marriage and relationships research there has tended to be a preoccupation with relationship breakdown and dissolution, obscuring the body of literature that explores the reasons why many marriages are enduring, satisfying and happy. Drawing on this literature, Robyn Parker discusses some of what is known about why many marriages last for very long periods and considers how knowledge of the ways in which marriages can be made to last can help young couples create and maintain their own enduring and rewarding marriages.