Do you feel jealous when someone younger is better than you?

My brother is 15...yet he seems to be doing WAYYY better than I was at that age. He also has way more friends than I do right now...in fact more than I ever have. His antidepressants work and mine never have. He’s considered attractive and I’m not. He’s doing so well in school. I guess it’s stupid to be envious of a 15 year old, but I kinda am.