The author shares her spiral from popular, active teen to obsessed, social outcast when, at the age of fifteen, her mind became fixated with the idea that she was going to be diagnosed with brain cancer. When her fear became an obsession, life as Allison knew it changed drastically. But when she finally accepted that she needed help and learned she had obsessive-compulsive disorder, she was able to start rebuilding the life that had crumbled around her.