[K. in Cleveland]

I can empathize with you on your feelings here. I'm sure there is something you are very good at and your brother is not so good at. Even if it's something that seems silly, it's still something that you excell at. Use that talent or skill, be it writing poetry, or playing video games, or anything in between, and make it a strong point of who you are. In other words, use that talent or skill to boost your self confidence. It is very true that women are attracted to confidence as much as physical traits. You may also need to seek counseling to help you get over your self confidence issues. There is no shame in seeing a therapist, and don't let anyone tell you otherwise!

Just by the fact that you realize there is a problem you're already a step ahead of some people, and you've made your first step towards success!