So the last week or so I've persistently not been settling down to sleep until after 3 AM (including tonight, as chance would have it). It gets to about 1AM and I think 'that's enough, I'll go to bed now' and then I just... don't. I mean procrastinating about winding down and going to bed has sort of been a consistent thing with me for the last few years but not usually so late so persistently.

It means I'm not sleeping nearly enough and getting increasingly exhausted every evening,...