The document discusses parenting styles and personality traits that contribute to relationship happiness or unhappiness. It finds that democratic parenting where rules are discussed correlates with happier, healthier children. Uninvolved or rejecting parenting styles relate to problems. Specific personality issues like moodiness, negativity and control correlate much more with unhappy couples while flexibility and agreeableness link to happier relationships. The takeaway is to focus on one's own behavior, use strengths to enhance the relationship, and handle differences respectfully rather than trying to change a partner.