Émile Coué fue un psicólogo y farmacéutico reconocido por su aplicación terapéutica de la autosugestión. Su obra se centró en el profundo impacto del poder de la mente en el bienestar individual, célebremente encapsulado en su frase: 'Cada día, en todos los sentidos, estoy mejor y mejor'. Este método, a menudo denominado Couéismo, enfatizó los potentes efectos de la autopersuasión positiva. El legado de Coué reside en su exploración de la autocuración y el cultivo consciente de la mejora mental.
Coué believed that it was possible to reprogram one's psyche through the repetition of key mantras or affirmations, resulting in dramatic improvements in health, self-image, and a general feeling of wellbeing. He became best known for counseling people in the use of one basic affirmation: Day by day, in every way, I am getting better and better.
Autosuggestion is presented as a technique developed by Emile Coué that aims to enhance mental and physical well-being by influencing the subconscious mind through repeated affirmations. Contrary to the belief that willpower alone leads to success, Coué emphasized the importance of imagination in effecting change. His method, which involves a structured routine of affirmations, is intended to complement medical practices rather than replace them. The book also touches on the influence of Coué's work on later techniques like autogenic training, developed by Johannes Schultz.