My brother is twelve, and I see him making all the mistakes I made growing up, but worse. Unlike me, he has a lot of confidence, even slightly arrogant, so he doesn't listen to my advice. My mother doesn't have the same energy that she had while raising me.

If I don't do something, he may grow up to be really unlikeable and harmful to others, and this is really stressing me out. I am already going through quite a lot, and this makes me feel like a mediocre son/older brother.