It's important to be able to stop working for the day

Sigh, am hard at work revising a book. Happy I have the time to really sink into it and work on it. I like the book, and I think revision is going well. But in the typical manner of revision, I keep finding new problems the more I work on the book.

Today I got pretty far in revisions, but then I realized that, partly as a result of this round of revision…