Being different than someone personality-wise doesn't equal being inferior. From where I stand, the issue isn't you or how you stack up against your brother. The issue is your own sense of self-worth. Such self-deprecation feeds into a vicious cycle. Everyone has things about themselves that they'd like to change or improve. And each person is an ongoing work in progress. But we remain stagnant when we fail to see our own value as individuals. Because if we can't see that, then where's the motivation to push forward?

I was shy and timid most of my life. I still have many introverted tendencies. But I've still been able to cultivate many meaningful and enjoyable relationships. Do I sometimes wish I was a bit more outgoing? Sure. But I'm ok with myself for where I am right now. I'm also proud of the headway I've made in becoming more like the person I want to be. So I would say to stop looking at yourself next to somebody else and start just looking at just you and the value/potential you have.