From the author of the internationally bestselling 13 Things Mentally Strong People Don’t Do series and preeminent psychotherapist Amy Morin, comes a guide for couples looking to develop mental strength together and sustain happier and healthier relationships.  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 strongest, best version of themselves.Now, Morin turns her expert eye to how couples can work together to grow stronger and have better relationships. Relationships play a key role in mental strength, and partners have the ability to help one another build the mental muscle they need to reach their greatest potential—with hard work and the right tools.With her signature framework, Morin identifies the 13 key mistakes couples should avoid to heal their relationships and develop their mental muscles.Providing res