I experienced an unexpected boon the other day. Big chunk of the morning-into-the-afternoon scheduled with a client who needed to postpone. That left me with a full day to spend with my keyboard, back in 650 B.C.E. with my character Judith, just as she is making the transition from the safety of her village into meeting her enemy face to face.
Judith was not happy that day but I was and am. Six hours and two chapters of revision instead of less than half that much.