Thank you for this. After a difficult and disappointing weekend, and after yet another day of pain that prevented any real productivity, I was trying to give myself an earnest pep talk and to allow my learned and earned wisdom to drown out the voice of doubt. I felt I had only partially succeeded, though I still got up, went for my hike, had a good breakfast, and got myself to my desk. And then I read this entry of yours. It was the right message, at the right time.