mirror?
In 1961, 18-year-old Ross enlisted in the United States Air Force and was put into service as a medical records technician. He rose to the rank of master sergeant and served as the first sergeant of the clinic at Eielson Air Force Base in Alaska where he first saw the snow and mountains that later appear as recurring themes in his paintings. He developed his quick painting technique during brief daily work breaks. Having held military positions that required him to act tough and mean, "the guy who makes you scrub the latrine, the guy who makes you make your bed, the guy who screams at you for being late to work", Ross decided he would not raise his voice when he left the military.
https://en.wikipedia.org/wiki/Bob_Ross