When I first started working today, it was more boring and difficult than I expected. It seemed to get better after an hour or so. That is, I stopped working after an hour or so, but I've been working on-and-off since then without having nearly as much trouble. It's not that I haven't been working continuously. I was fighting impulses to stop from seconds after I started working before. I think it's just that I was less used to working.

Also, I've very much noted that, when my productivity is lowest, I don't get much enjoyment out of anything. At that point, I don't feel like I can do anything productive at all.