"Self Mastery Through Conscious Autosuggestion" by Emile Coué is a self-help guide focused on psychological techniques for improving well-being, likely written in the early 20th century. The book explores the concept of autosuggestion, the practice of consciously influencing one's own thoughts and behaviors, to achieve mental and physical health. Coué suggests that by harnessing the power of one's unconscious mind, individuals can overcome various ailments and achieve personal mastery. At the start of the text, Coué introduces the overarching theme of autosuggestion, presenting it as both an inherent human capability and a tool that has been historically misunderstood. He explains the distinctions between the conscious and unconscious self, illustrating how beliefs and mental images can directly impact physical health and behavior. Through various examples and case studies, Coué emphasizes the importance of positive thinking and the role of imagination in overcoming life's challenges, setting the stage for detailed methods and practical applications of his techniques later in the book. (This is an automatically generated summary.)