Seen two counsellors, neither were any help.
First one was when I was 13/14 and had just been diagnosed with AS. All he ever said was "don't be so negative"
Second one was a uni counsellor when I was 22 and she was absolutely horrible to me. Had no understanding of AS or my issues and her basic attitude was "we all have problems and some people are much worse off than you" and she made me out to be lazy and that I couldn't be bothered to do anything. I was so upset I couldn't go back.
Hope you have a better experience, sure it works for some people if you get the right counsellor.