Émile Coué and his method

Placebo effect

“We have within us a force of incalculable power which, when we wield it in an unconscious manner, is often detrimental to us. If, on the contrary, we direct it in a conscious and wise way, it gives us mastery over ourselves and allows us not only to help withdraw ourselves and to protect others from physical illness and moral illness, but still to live relatively happily, whatever the conditions in which we may find ourselves. "