Many people with obsessive-compulsive disorder (OCD) struggle with mental compulsions?such as intrusive or repetitive thoughts, rumination, ritualistic counting, or ?emotional checking.? These ?hidden? compulsions can be extremely debilitating and significantly impact one?s life. This workbook offers evidence-based skills drawn from cognitive behavioral therapy (CBT) and mindfulness to help readers reduce rumination, worry, and other mental traps.