Every relationship has it's ups and downs. It's not unusual to go through rough patches, especially in the course of a long-term relationship. Many couples weather these rough patches and their relationships are ultimately strengthened for having gone through a difficult time in an otherwise good and stable relationship. But there are times when it's not always so clear whether the emotionally healthy response is to persevere in the relationship or whether it's time to leave. This dilemma might be further complicated by whether the couple has small children, particular religious views, complicated economic factors or an overall ambivalence about the relationship.
No One Knows Better than You What It's Like to Be in Your Relationship
Dealing with Infidelity
See my article: Coping with Infidelity
Are You Afraid to Be Alone?
Are You and Your Spouse Drifting Apart in Your Relationship?
An Emotional Dilemma
Taking the First Step
Also see my article: Are You Too Afraid to Leave an Unhappy Relationship?