How to lose some weight?

I am a 13 year old girl, I am around 5 4 and I weigh 117. I feel like a lot of my friends weigh less than me and it is kind of pressuring so how should I lose weight? Should I be worrying about losing weight?
Update: Thanks guys! I feel a lot better and now I realize that I should just embrace who I am and try my best at everything I do. I won't let myself be pressured by others anymore :)
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