The story is the same for me, Aster. I was diagnosed recently and am in my 40s. I haven't read all of the replies here, but I'll tell you what I did, and perhaps it'll be a solution for you. To keep myself from wasting time, going over all of my diagnosis materials and research again and again (which I did many times), I wrote a 1-page letter to myself that I read whenever those doubts creep into me. At first, I read it every morning and sometimes many times in a day. Slowly but surely, I've had to read it with less and less frequency and now only need it once every couple of weeks. The letter can say whatever you need it to say --write it during a time when you are most confident of your diagnosis. I hope that can work for you.