People are often surprised when I tell them I'm introverted, because I'm not shy and I can carry on a conversation. However, there are several things I wish my extroverted pals knew better, chief among them is that sometimes I need to think for a moment before I answer. (They sometimes take this as me having no opinion so they just keep on talking.)
I've tried many times to break out of what's comfortable to me and try to keep up with the conversation. Sometimes this means I talk louder than I would normally, or try to throw my thoughts out there in a willy nilly fashion. But neither of these things feels good, and what it ends up producing is me talking louder and more uncomfortably than usual, trying to quickly get my thoughts out before they are stomped on by someone else. Most of the time, I just don't succeed at this. I'll start to say something and someone will talk over me before I can finish the thought. As a result, people will misunderstand what I was even talking about.
It's frustrating to deal with, but I know that I have to keep trying. Sometimes you can tell friends that you need a little time to think, or even time to recharge your batteries after a party or group event. Sometimes they get it, and sometimes not.
Most of the time, I come home from an event or group outing and take a nap! I'm utterly exhausted. I've worked in the corporate world for many years, and this helped me break out of my shell a little bit and understand that there are times when I need to communicate differently, as uncomfortable and wrong as it feels to me. It isn't a perfect solution, either. In trying to "be more extroverted" I often feel that people don't get what I'm saying because I'm trying too hard to communicate differently and as a result can't get the full concept of what I'm saying.
As an introvert, there are things we'd like to tell our extroverted friends. Here's some more info on introverts and friendship: