Sure, everyone knows how important compatibility is for a marriage to remain happy and successful. All marriage sites too lay emphasis on this when they try to help you locate a mate. But is that all one should look for when selecting a life partner? According to some marriage counselors, compatibility will help your marriage, but not as much as you think it will. So what then are the real factors that make for a happy marriage? These rather important ‘ingredients’ that help a marriage to sustain and be successful are respect, acceptance, emotional connect and communication.