That doesn't make for very popular psychology, but it is basic to Christianity. There is a grain of truth in the self-talk. We do have inner yearnings for acceptance and fulfillment. But according to the Scriptures, we find those needs met, not by serving ourselves, but by serving God and others. Marriage is being undermined today because people are covetous.
Covetousness is the opposite of contentment.
Discontent is fostered in children with multiplied toys and pleasures and in adolescents with bigger toys and spicier pleasures. It is hardly a wonder, then, that adults grow discontented with one lifelong companion. In our day people not only want things they do not have, but they demand things they do not have. The mood is one of instant gratification. People seldom see the tie between covetousness and hostility, but invariably when material things and personal wants have priority, relationships suffer.