A central difficulty when reading al-Ghazali (d. 1111) is understanding why he attempts to bring together seemingly disconnected aspects of ethical theory. He inclines toward a more philosophical influence of virtue ethics in his earlier book, The Scale of Action (Mizan al-'amal), while in his vast encyclopedic work, The Revival of the Religious Sciences (Ihya' 'ulum al-din), his conception of religious practice was greatly informed by the emerging Sufism of his time. These two works, in particular, lay the foundation for understanding his program for Islamic practice and his unique balance of reason and revelation. Al-Ghazali's ethical writings are not easily explained by the existing categories and demarcations found in contemporary ethical discourse, so it becomes essential to present what was at the centre of his pedagogy. This book argues that the thread connecting each method of expression is al-Ghazali's dramatic and explicit emphasis on self-control as the path to felicity. It demonstrates that the underlying substrate of al-Ghazali's ethics is his constant focus on restraining and redirecting the body, emotions, and thought. The study first examines the destructive vices, specifically in relation to eating, sexual desire, anger, and speech. It is then followed by looking at al-Ghazali's early work, The Scale of Action which explains his views on controlling the body and achieving moderation through the process of habituation. It then turns to investigate al-Ghazali's views on controlling the emotions and how he understands thought and its role in unification of the fragmented self. It is only in the final chapter, entitled self-surrender, that the study attempts to answer the question of why, for al-Ghazali, the subject of self-control takes such great importance. His directions for self-control are not without purpose and are designed to culminate in a unique form of knowledge. Although the aim of acquiring knowledge is initially for the purpose of inducing proper action, the final result, according to al-Ghazali, must culminate in recognition and love of God. For these reasons, the study naturally concludes by answering the question of why these techniques of restraint were of such great significance to al-Ghazali.