Disappointment

I'd sensed I was very close. I'd applied on a whim, and then when it became more tangible--an interview!--I let my hopes get up. I daydreamed. I consoled myself at minor irritations with the idea that I'd been elsewhere soon, anyway. And then a very polite email came:

Although your experience and accomplishments are excellent, we are
continuing our search to fill the position with another candidate whose
experience and background will be better matched to our current needs.

But my background is a perfect match, so I thought. I'm more irrationally upset than I should be. It's frustrating. I feel like I'm going to be stuck where I am for the rest of my life.