There is another key factor in creating a successful marriage, or repairing one that has deteriorated.
Communication is, in fact, the root of marital success from which a strong union can grow.
Noncommunication is the rock on which the ship will bash out her keel. It is too much to expect of a society above the level of ants to be entirely practical about an institution as basically impractical as marriage. Thus, it is not amazing that the misselection of partners goes on with such abandon. They depend uniformly upon communication. The second dynamic is the urge toward existence as a future generation.