A rejection letter is one school’s opinion, printed on nice paper.

Official formatting makes a judgment feel like a verdict. It is a decision made by tired people, in a short window, with limited information, about a pile of applications that were mostly good. Their answer describes a fit between you and one place on one day, and it has no authority over what you do next.

Let yourself be genuinely disappointed for a day, because pretending it does not sting takes energy you need. Then look at what is still open and put the same effort into one of those.