My crush likes someone who is way more successful than me!?

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I came to find that my crush likes someone else. Someone I dont know personally.
But I'm perfectly fine with that. He has all the right to like anyone he wants.
But I searched this crush of his on Facebook just to try to find what type of a girls he's interested in.( I'm 18 by the way. I'm in that break between when school ends and college has not yet begun. I'm selecting colleges.)
Anyway, she is PERFECT. Very pretty. School President. MUN achiever. Has won National awards. And so has he. It's just that since the day I came upon this fact of how successful she is, I have had some real self esteem issues. I desperately want to be like her. I feel so small. I've had many family issues and took therapy till I was school, so I'm not at my best. But I so aspire to be that. To be her.
I just want someone to help. I want people to just tell me what I should do.
How do I get my self esteem back?

I'm so sorry that this is so long. And thanks to all, who reply to this, and not make fun of it.