Issues with resentment and self acceptance
I've been feeling angry and bitter recently about things that have happened to me in the past. In secondary school I was set up, humiliated, ostracised and bullied to the point where I became mentally ill with depression and psychosis after I left. Many people in my life who mean well have said words to the effect of "It's in the past. Forget it and move on with your life." but this doesn't make the pain go away. When I was mentally ill I felt like the lowest piece of dirt on the ground was a million million times better than I was and the act of tying my shoelaces left me mentally exhausted. It got to the point where I put a knife on my wrist with the intent to cut it open but I could not bring myself to do this because I knew that if I did I would die and I didn't want to die despite how I was feeling. I spent six years like this before I overcame my problems. I'm also worried about my identity as an Asperger's person because I have very good social skills in real life I wonder if I have any right to identify as autistic and if other autistic people would judge me harshly because of this. I have an official diagnosis of Asperger's syndrome that was made in 1995 and one that was made in 2003 when I started to experience depression but I just worry that I have become too NT and lost my original self. I don't mean to offend anyone reading this, these are just some things I am worried about.
A difficulty with socializing is symptomatic of AS, but it's not the only thing associated with it. Are you still obsessive over strangely specific things? Are you sensitive to certain stimuli? Do you spend much of your time alone recharging after social encounters? Have you always been good at socializing, or only recently? So on and so forth. I'm no psychologist, but I find it difficult to believe that you "grew out" of something as serious as autism.
And - to be entirely objective - such people express conventional wisdom when they tell you to "get over the past". They're right: it is the past, and it would do you a lot of good if you could look around it and move forward. That having been said, it's where their conventional wisdom ends, seeing as they (probably) haven't been through as traumatic an experience as yours.
I wouldn't outright ignore them - they have a point. But you can't trap yourself in your own head forever; at some point, it will become unmanageable, and it's only a short slide from there until you start getting self-destructive.
Have you considered therapy, or finding a talent of some kind that you could improve at? At worst, it will be a good distraction; at best, it might be a more natural language for you to express your emotions in, and perhaps help you objectify the past.

