Unmet expectations in marriage

The problem of unmet expectations in marriage is primarily a problem of stereotyping. Each and every human being on this planet is a unique person. Since marriage is inevitably a relationship between two unique people, no one marriage is going to be exactly like any other. Yet we tend to wed with explicit visions of what a “good” marriage ought to be like. Then we suffer enormously from trying to force the relationship to fit the stereotype and from the neurotic guilt and anger we experience when we fail to pull it off.

– M. Scott Peck, in Search of Stones
http://www.goodreads.com/author/quotes/3061.M_Scott_Peck