I am 67 years young. Everyone assumes that I am 10 to 15 years younger than I am, and then say that I am young at heart and so on.
My formal diagnosis was 10 year ago, and it helped me a lot.
My solution is to have a routine that is forced upon you. By this I mean, a job or regular volunteer work. This gets you out and about and meeting people.
Then I hope to be able to focus on the two books that I have in me.