"The Positive Power of Sadness: How Good Grief Prevents and Cures Anxiety, Depression, and Anger" is a book that explores the benefits of sadness in preventing and curing anxiety, depression, and anger. Published by Bloomsbury Publishing USA in 2017, this hardcover textbook delves into the subject area of psychology and mental health, offering insights on how embracing sadness can lead to emotional well-being. With a total of 168 pages, this book provides valuable information in English for those interested in understanding the role of emotions in our overall mental health.