I passed the halfway point yesterday in my "Six Books in Six Weeks" marathon. That felt good. Still does today, in fact.
It helps that the books share a global theme — that makes both the research and writing processes more efficient. It is wearing, though, to finish a manuscript one day (last night in this case) and then get right down to business on the next installment at wake-up. But the switching-gears part takes a minute no matter what kind of work you do.
I spent the first half of today on administrative tasks like invoicing, filing, stacking the library books I need to return (making sure to remove ALL Post-its so I don't get another mean warning!), and tending my embarrassingly overgrown email garden. It required very little quality thinking yet yielded a bonus sense of accomplishment.
And now, with lunch out of the way and no further ado to be had, on to Book 5 I go!