The first thing I didn't do was go to the Welsh class, but that's OK because it's half-term and the college is closed.
I then failed to go and wave a flag to support Welsh independence because the local group emailed me the wrong time, and then sent another email half an hour later with the correct time, but I didn't see it until this morning and by then it was too late.
I have also failed to write a letter to Boris Johnson because my note about the campaign to flood his office with actual snail-mail letters says, "see email for details" and I can't find any email about the campaign, either in my inbox or in the deleted messages. Perhaps I imagined the whole idea? Anyway, things are moving so fast and we have just had the official approval of another extension from Donald Tusk, so I don't know whether the letters are even relevant now.
Now to look at my To-Do list to see if I can get something useful done before lunch.