Happiness is something that every human desires and pursues, but people have different opinions about what happiness truly is and how it is actually achieved. Some believe it is attained through wealth, some believe through fame and some believe through position; there are numerous theories concerning this. With an estimated 350 million people currently affected by depression, happiness continues to be elusive to a significant number of people. Therefore, a vital question is: what are the keys to happiness? Imam Ibn al-Qayyim tackles this question in this book and mentions a number of ways to attain happiness in light of the Qur'an and the Sunnah, starting with the fundamental of all fundamentals, which is Tawhid (Islamic Monotheism). He explains what happiness is and he clarifies the way to attain it. Al-Allamah Muhammad Aman al-Jami mentions some explanatory comments to the tremendous words of Imam Ibn al-Qayyim.