Hard question to answer. I've always been pretty adamant that I'm not an introvert like people think I am, and that AvPD is like being an extrovert trapped in an introvert's mind. This is mostly because of how much I craved relationships during the period of my life (high school) when I felt the worst and the most alone. I enjoyed time by myself sometimes, but mostly I was just ######6 lonely.
But like emerald, an important step for me was learning to love the time I had to myself and get out of the mindset I used to have where the way other people responded to me controlled the way I felt about myself and my life. It was extremely hard because I would try to become completely self-sufficient and tell myself if other people wanted to be my friends, let them come to me, but don't get to clingy and needly like I always have before. But if I started making a friend through facebook or a group that I was in, and they didn't call me when they said they would or whatever, I would start to feel lonely and ignored again.
I kind of cheated myself in this aspect by going to
Miami University of Ohio ("J Crew U"), where I knew I wouldn't
want to fit in with most other people because they were all superficial sorority and fraternity clones. Not only that but I completely accidentally ended up in the "health and fitness" dorm (it was the only dorm with a single room available), full of the blondest, most generic sorority clones in the freshman class.
I met one girl in the dorm who I became "best friends" with, but mostly ours was a relationship built on mutual contempt for everyone around us, and a need to have someone there for each other at all times. I became the powerful one in our friendship, mostly because I had met my girlfriend the summer before and spent most of my time on the phone with her, so I was never truly alone when I was by myself. After awhile I got annoyed with my friend sometimes for wanting to hang out with me so much, but I liked being in a position I'd never been in before - being needed more than I needed another person.
I left college after a year because my relationship with my girlfriend was suffering and I was sick of going to J Crew U. Now that I've moved in with her I'm starting to realize how much of an introvert I really am. As much as I love her, living with someone is exhausting, and I look forward to the moments I have to myself. Of course this is true for anyone living with someone they're in a relationship with for the first time, but the change in myself is noticeable. Before, I could stay up until all hours of the morning, but when we moved in together I started getting tired "early" (before midnight), which I at first attributed to having a close-to-full time job for the first time in my life, but I don't really think it's the job because I've had jobs before and it's never been that bad.
In the past when I've hung out with friends I've noticed no matter how late I'm up with them, I have to spend at least an hour afterwards by myself doing nothing before I can go to sleep, sort of to wind down or something.
I guess it's a balance - I need time to myself just as much as I need to be with other people. I don't know if I'm extroverted or introverted, and maybe the answer really has nothing to do with AvPD. AvPD blocks a person from getting one of our most basic needs, after the obvious needs food and shelter. It doesn't matter if you're introverted or extroverted or to what degree, everyone needs both time alone and time with people, and if one of those is taken away from us it's bound to make us unhappy.