I did it! I managed to make one sketch every day all of September. I have to say, I was very glad when the 1st of October dawned but I'm also quite proud of myself. So here's the last few:
The most important thing now is to keep it up, to make it a habit, maybe not a daily but perhaps a weekly one. The aim is after all the next travel sketchbook.
Here's me trying to keep it going: