I was also 48 when I was diagnosed. I also felt different all my life. That being said, aside from having an explanation as to why I'm the way I am, the diagnosis hasn't changed my life in any way.

I've stopped masking. It was a difficult, but necessary process as wearing the mask was utterly exhausting and sometimes confusing to the point where it was difficult for me to tell where the mask ended and I began. It led me to a total mental breakdown due to the severe anxiety of it all and I spent a month pretty much chut away from the world. Once I left the 9-5 world and began working for myself at home, it was easier to let the mask go (slowly).