Subject: Re: Not Perfect, But Presidential
... but to handwrite personal letters to ten ordinary American citizens every single night, a practice he maintained with almost monastic devotion throughout all eight full years

Wow, I had no idea. No public bragging about it either AFAIK, unlike a certain other POTUS would be certain to do at every opportunity.

This must have easily taken at least an hour every night. I can't fathom how little sleep Obama must have gotten - no wonder his aging and graying was accelerated!