How do you know when to trust someone? How do you know when to say “yes” and when to say “no?” How do you decide between two things you really want? Why do you sometimes experience resentment or regret? When is it best to selflessly give to others and when is it best to let others take care of themselves? How do you know when to “follow your heart” or when to “feel the fear, but do it anyway?” In a word: Integrity I often see couples in conflict over issues of integrity.