I am extremely extroverted. As one of my classmates put it, "Tim, you're so full of stories." I am outspoken and have a great sense of humor. I also tend to be opinionated (gotta take the good with the bad lol).
You're probably thinking to yourself: That's great but what the hell does that have to do with me?
Just this: Until I was 14 I was shy and very closed off. The more I was judged the more I did the opposite of what I should have done. It's not like they are attracted to me anyway, so I will just give them an excuse not to get close by not bathing, not brushing my teeth, ect.
I finally made some accomplishments in my life and started to feel good about myself. Instead of taking on a huge project, take on a bunch of little ones related to the bigger project you want to tackle. With the little victories you have confidence that you can do the bigger project.
Having your friends tell you what they love most about you is also a good way to build up some confidence.