If I Stay is a 2009 young adult novel by Gayle Forman. The book is about 17-year-old Mia Hall, who is the only survivor of a car accident that kills her family. The book follows Mia's out-of-body experience, where she must decide to wake up and be reunited with her boyfriend or die and join her family in the afterlife. The book is described as a romantic, uplifting story about memory, music, living, dying, and loving. It is simultaneously tragic and hopeful.