When psychotherapist Amy Morin first introduced the world to the concept of mental strength with her internationally bestselling book 13 Things Mentally Strong People Don't Do, she showed millions of people how to be the stronger, best version of themselves. Now, Morin turns her expert eye to how couples can work together to form happier, more resilient relationships. Deploying her signature framework, Morin identifies the thirteen key mistakes couples make and offers life-changing techniques. Each Chapter provides specific exercises, real patient stories, quizzes, and conversation starters to help readers work through the most common issues holding their relationships back-from healthy communication to setting boundaries to resolving conflict. Throughout this revelatory guide, renowned therapist such as Lori Gottlieb, Nedra-Glover Tawwab, and Dr. Mariel Buqué weigh in with thoughtful insight on the pitfalls and breakthroughs they see most often. Covering a wide range of relationship dynamics and challenges, Morin empowers partners to work together to break destructive cycles and build a love that lasts.