The Silver Linings Playbook by Matthew Quick

The novel follows the story of Pat Peoples, a man recently released from a mental health facility, as he attempts to rebuild his life and reconcile with his estranged wife, Nikki. Pat is determined to become physically fit and emotionally stable, believing that this will help end what he perceives as "apart time" with Nikki. Along the way, he forms an unexpected friendship with Tiffany, a woman dealing with her own emotional struggles. Through their interactions, Pat begins to confront the realities of his past and the complexities of human relationships, ultimately discovering that life's challenges can lead to unexpected personal growth and understanding.