With a focus on self-empowerment and resilience, this refreshing and witty relationship guide has a reassuring counterintuitive message for unhappy spouses: you only need one partner to initiate far-reaching positive change in a marriage.

Conventional wisdom says that it takes two to turn a troubled marriage around and that both partners must have a shared commitment to change. So when couples can’t agree on how—or whether—to make their marriage better, many give up or settle for a less-than-satisfying marriage (or think the only way out is divorce).

Fortunately, there is an alternative. “What distinguishes Reilly’s book is that she says a warring couple don’t have to agree on the goal of staying together; it takes one person changing, not both, to make a marriage work