Why do I always get jealous when someone’s art is better than mine?

I love to draw and it’s been my dream to be an artist. A lot of people say my art is so good and some say it’s okay and they’ve seen better.
When I saw one of my classmates art, everybody was AMAZED! She got so many compliments. I was blown away and gave her positive comments but I’ll be blunt, I’m JEALOUS. I feel so bitter and jealous when I see her art and people giving her art more attention than mine.
I asked about my art but most said, “It’s good but not as good as (her name).”

“Great but you can do better.”

”Meh.. it’s alright”

”I’ve seen better.”

Even my own nephew said, “Well your art is great but not as great as (her name)’s. I like hers better than yours. Welp bye.”
Ouch that hurts but at least he’s honest. He’s seven.

I’ve gotten brutal comments of my art and it hurts so bad.

I never took art in high school so I don’t know how they are.

Why do I always get jealous when someone’s art is better than mine?
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