Of all of the minorities in the world, even of the subset that may compete with you on for a position, you just CAN'T fathom that some of them may be better than you? That in even competition, this person, who just happens to be a (gender, racial, sexual orientation, ability, religous) minority is better than you at the position you're chose to apply for?
Framing your competition as diversity hires (and contemplating the outsized concern that they have on your life) says more about than you think. You're the bottom of the barrel at what you do. "Diversity hires" don't compete at a high level.
I for one know that if my competition wins, whether they are a minority or not, they do it on skill. I've elevated myself out of the concerns of competing with diversity hires, because I'm great at what I do. Level up.