The "Big Activity Book for Anxious People" by Erin Williams and Jordan Reid is a trade paperback book published by Penguin Publishing Group in 2019. It is an activity book that focuses on self-help, art, psychology, and humor, with a specific focus on managing anxieties and phobias. The book includes illustrations and features comic strips and cartoons to help readers cope with stress and engage in stress management techniques. With 160 pages, this book offers a variety of activities and prompts to help anxious individuals find relief and improve their overall well-being.