The Let Them Theory by Mel Robbins is a nonfiction novel aimed at adults, published by Hay House. This first edition paperback book is part of the Insight Guides series and is specifically categorized under the genre of economics. With a weight of 20 oz and dimensions of 6.5 inches in width, this Enlightenment literary movement piece offers an unabridged narrative in English, making it a valuable addition to any book collection for those interested in thought-provoking ideas.