Researchers frequently use serum testosterone levels as a proxy of competitive drives e.g. in stereotype threat tests. Which suggests this is fixable with things like lifting weights or doing scary things like boxing, munchung almonds etc.

This matters, because it is not simply about a trick but - in my case at least - it is about everybody who seems better than me makes me feel kinda miserable, so getting more competitive is necessary for happiness / non-depression in such cases.