"The Four Agreements: A Practical Guide to Personal Freedom" by Don Miguel Ruiz is a self-help book that offers a guide to personal transformation and spiritual enlightenment. The book presents four principles or agreements that, when practiced, can help individuals break free from self-limiting beliefs and live a more authentic and fulfilling life. These agreements include being impeccable with your word, not taking anything personally, not making assumptions, and always doing your best. Through these agreements, the book aims to provide readers with practical tools to achieve personal freedom, happiness, and inner peace.