My sister is better than me in nearly every aspect?

So here's the deal, my younger sister is thirteen years old, I'm nineteen, and I'm starting to realize that she is better than me. We're both attractive, but she is like a perfect 10, she's literally flawless in every way. She's really tall for her age (like taller than me and I'm 5'3"), she has perfect hair, skin, face symmetry, etc. Second she's really popular, when I was in school I had friends, but she is liked by everyone. Third, she's really smart, she goes to a gifted middle school, and she excels in every subject. Fourth, she has a gift in dancing, she does competitions and all that. I don't know if I'm jealous, but what can I do to be as good in life as she is? It's just so unfair, it depresses me even though I guess it shouldn't....