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By 1953 Davis had been addicted to heroin for about four years, pawning his horn and pimping to support the habit. He returned to his father's farm outside East St. Louis, shut himself in a guest house, and went through withdrawal cold turkey over roughly a week and a half of sweating, vomiting, and pain. He credited boxer Sugar Ray Robinson's self-discipline as his model, and his comeback began with the 1954 recording 'Walkin''.
Davis treats silence and omission as the main expressive material. Leaving space means dropping the obvious note and letting the rhythm section and the listener fill the gap. That creates tension that dense, virtuosic playing cannot, so restraint becomes a stronger signature than technique.
Davis built bands such as the groups with John Coltrane and later Herbie Hancock and Wayne Shorter by hiring musicians who could challenge him. He then gave them minimal instruction, often just sketches, a mode, or a cryptic comment, and made them find the music live on the bandstand. On 'Kind of Blue' (1959), players received scale-based sketches shortly before recording and most tracks used first complete takes, which kept the playing fresh rather than rehearsed.
Davis argues that an artist who keeps playing a style once it has succeeded turns into a museum piece, and that staying creative requires abandoning your own winning formulas. He moved from bebop to cool, to modal, to electric fusion, and treated audience and critic demands for the old sound as pressure to be resisted, not served. He accepted the cost of alienating former fans as the price of staying current.