Jimi,
You are not alone. I feel the same way. I don't know my specific IQ, but I did graduate from law school and pass the bar exam. Now, due to meds and ECT, I know I am so much slower. It is an awful feeling and I feel as of something huge and extremely important has been stolen from me. My self esteem is in the toilet.

Hence, my name, Nobodyandnothing.