OCD is one of the most common and debilitating mental disorders and left unchecked, this disease wreaks havoc on lives. But there is an effective treatment. Exposure and Response Prevention (ERP) involves exposure to OCD triggers in a safe environment for increasingly long durations. And no one knows ERP better than Nathan Peterson. The internet’s #1 OCD guide, Nathan has already helped hundreds of thousands of followers regain control over their lives. In this book, he gui...