Émile Coué fu uno psicologo e farmacista noto per la sua applicazione terapeutica dell'autosuggestione. Il suo lavoro si concentrò sul profondo impatto del potere della mente sul benessere individuale, celebremente racchiuso nella sua frase: 'Ogni giorno, sotto ogni aspetto, sto sempre meglio'. Questo metodo, spesso definito Couéismo, enfatizzava i potenti effetti della persuasione positiva di sé. L'eredità di Coué risiede nella sua esplorazione dell'autoguarigione e della coltivazione consapevole del miglioramento mentale.
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.