In an article titled "Therapist Shares 7 Defense Mechanisms that can Ruin Relationships," the author highlights various behaviors that can negatively impact relationships. These defense mechanisms, such as denial, projection, and rationalization, are ways in which individuals protect themselves from emotional pain or discomfort. However, they can ultimately damage relationships if not addressed and worked through. By recognizing and addressing these defense mechanisms, individuals can improve their communication and build healthier connections with their partners.