Midlife can be a time of great change for individuals and a make or break period for marriages. Couples navigate a relationship landscape defined by such lifecourse landmarks as the empty nest, changing roles at home and at work, aging bodies, and the need to care for family elders. Some partnerships are resilient through this period, adopting practices that help them cope, bounce back, and even thrive in the face of adversity. Others sputter, wither, and burn out. What makes a midlife marriage resilient? Drawing from hundreds of interviews with couples, The Middle Years of Marriage answers this question.