We mistakenly assume that bodily survival has a higher precedence than ego survival. This is simply not generally true. Ego will happily destroy the body for its own sake. Look at overweight executives headed for heart attacks on the way to getting their pictures in Fortune or anorexic models suffering slow starvation on their way to getting their pictures in Vogue. Protecting ego is the general case.
Karl Marlantes, What It is Like to Go to War
desire, ego, motivation