Do I need to be assessed?

I'm rapidly approaching the grand old age of 80 and recently suspected that I could well be autistic. I'm not looking for any financial or official assistance, so is there any need for me to be assessed?

What I really need is advice on how to manage things. I've been struggling a lot for too many years and I'm hoping that now that I may have identified the root cause of my struggles, I may be able to make things easier. Coping day to day shouldn't be this hard.