the.com/mind over matter

means The idea that mental determination can overcome physical limitations, discomfort, or obstacles.

from A 19th-century phrase popularized in discussions of spiritualism and mental healing, though the sentiment is far older — rooted in philosophical traditions (Stoicism, various religious teachings) that long argued the mind could master the body's complaints. The specific wording caught on as a kind of folk-philosophy shorthand, later adopted by self-help culture and sports psychology. It's less a precise doctrine than a durable slogan — easy to say, much harder to confirm when the matter in question is, say, a fractured bone or a bad flu.