A person who is discontent is always trying to change something about their partner or themselves in order to improve relationship. This is a short cut to disaster. When we try to change anything about our partner we are implying discontent and therefore seeking to change the outer world in order to cause the inner world. A person who has contentment will be happy internally before they enter a relationship and they will stay thankful and appreciative irrespective of the relationship. This is the foundation for long-term sustainable love.