I recently wrapped up a long edit of a non-fiction/academic book. I'm also wrapping up the January issue of the local/regional magazine that I manage. Both clients have already paid, and we here at the Tapia house are sitting pretty. In addition, I've no other clients who are not in "maintenance" mode and may not seek any, nor put out any queries (at least until later in the month).
I'm not saying this to brag, though. Instead, I'm relaying a reality of this career: the ability to time your freelance writing projects, detailed in that link.