I've learned to just try to control any excessively autistic tendencies. Doesn't always work but it takes the edge off others' suspicions, I think. When I served in the military I was an avionics mechanic and my unusual focus and attention to detail made me a great worker, although rather odd and quirky. As a sergeant I was awful, no leadership ability at all. I was able to retire but the last half was just miserable. Looking back, had I known I was probably autistic I would have never have said anything about it. That's grounds for a medical discharge at best and no pension. Now I work as a data analyst and I'm pretty well-suited to that job. I don't related to my younger NT coworkers but I do get results. Again, there are some jobs where a positive diagnosis can cost you that job, and this job pays very well.
Now I keep no friends and don't get out much but I've learned to live this lifestyle. Maybe it's just apathy, I dunno. Yeah, holding up that mask is tiring but after a while, at least for me, it seems to have glued itself on. I'm still old AS me under the mask but the mask seems to have become part of me. At this point in my life, I don't care so much anymore.