I have some issues with a sibling who is a lot different from me. Well, its not me but everyone used to think he had a good "energy" about him, as he was much more out going and happy go lucky compared to me the introspective, shy and troubled one. He was also the handsome one, I was never a looker till I changed in late teens, not that I am exactly beautiful but I get attention from the opposite sex. I think my sibling and all his friends would label me a weirdo.
I remember my real dad also commenting on a friend I had saying I would never be as good at sport as her as she had more energy and was much more outgoing.
But my sibling has and is currently having his own mental health struggle, and needs his medication adjusted - its depression. My ailments have been much more serious but I worry about him a bit. He has a family and mortgage and decent job. I really hope he will be okay.
I guess when it comes to family all you can do is agree to disagree. I get on with my sibling but I wont go round to his house for a drink or we cant talk about our problems that's a no go.
I maybe used to get a bit jealous of my sibling growing up. He had girlfriends and was popular. But it doesn't matter how many friends you have, its the quality of the relationship.