I was diagnosed as a teenager, and I got some help, but not much, and in school was treated - I guess like a lost cause as someone else mentioned. School didn't want to deal with me so I was put in the special ed classes starting from middle school on.
In middle school I was put in one class room the entire day with people with autism and other disorders where they couldn't do normal work.. thus I had no real challenges as far as school work went. High school was little different. I can't remember what the classes there were called but they were basically in-between the kind of class I was stuck in for part of middle school, and normal classes.
So there was actual work, and each class was separate, so no being stuck in one room all day. But the work wasn't much a challenge most of the time. I was able to try a normal class once but I didn't have the necessary classwork/homework management skills and the work became overwhelming even though I really did enjoy the learning.
And of course I haven't even mentioned yet... that during my teenage years, I had those outbursts like what happened to Adam in the movie all the time. It was a very bad time, constant changing, little explanations of what was going on, and no one being understanding, and lots of people ready to give up on you or just pick on/torment you.
I was also much more like Adam was in the beginning of the movie too. Little idea how to communicate effectively with NTs - or understand them since they tend to not say and mean/do the same things. And even though I had been diagnosed, I hadn't been told what all it really meant. Most of the help was receiving at the time was centered around controlling my outbursts and helping my Mom cope.
Which I realize in retrospect is a bit like trying to treat/hide/suppress the symptoms of a problem rather than dealing with the cause. I don't really think its anyone's fault in particular, rather just a barrier of communication, and a lot of small failures added over time that just kind of kept me in a not so good place, so I didn't really start getting past that stuff and actually begin learning how to more effectively communicate with people.
Sort of like in movie Adam when at the end of the movie he was beginning to pick up on things that he totally missed in the beginning. Its basically just learning what actions/word combinations/etc mean and how your supposed to respond to them, and on the other side of the coin how your supposed to respond not only in words but actions.
I've made much more progress in the former than the latter. So I tend to not interact much with people still because I usually mess up and act all weird. So I think that I while now I'm not near as bad as Adam was, I'm not anywhere near 'there' yet.
I can understand the whole being afraid of socializing thing because I have to deal with it myself now, because when you mess up, people don't tend to be very forgiving, so I have ended up most of the time not letting people get close enough to see, which means I tend to have short conversations if any at all
I'm lucky I guess that one of my bigger obsessions is with computers/technology so that I should be able to at least get some kind of job doing something that I at least enjoy partially. Though I'm still a bit away from that. And there is the whole... interview thing too
Anyway.. enough rambling from me. Sorry, that's something I'm still working on.