I know what you mean, when I got told that I was "finished at fifty" as the doctor told me, it took a while for that to sink in. What be meant was, I was finished working, as the MRI scan showed that my back was indeed badly damaged?
I felt guilty taking the disability benefit, as I had worked all my life from the age of fifteen, and to be told that bad news just shattered me!
Then to make matters worse, I was sleeping in our settee, (long story for the reason for that) when a brick came through the window, and the shock of that apparently was the trigger that set off my PTSD and changed my life for ever.