O Vexing Capricious Muse

I spent much of today on the book, and my work process went
- write
- discover I’d been goofing off on Wikipedia for half an hour
- make coffee
- write
- mow lawn
- try to write but actually research something really interesting about city structures
- write
- word count made! have dinner
- sit down with good book
- suddenly realize how the chapter needed to end, and why

Now do I sit back down to finish it out? Or let it go, in the hopes that taking notes and asking the Muse to please keep to a schedule is productive?