I got my writing quota done for the week, and the WIP is now over 40 000 words.
But I got nothing done on Black Flag.
I can't seem to concentrate on anything that isn't writing related, and art, even if it's art that tells a story, just doesn't seem to count. This is not normal for me, I usually have no trouble working on multiple projects at once, especially if they are in different media.
But I have a submission that is preying on my brain.
They say that the best thing to do is to start on your next book. I did that. And when I finished that book I wrote another book, and another book after that. I am now about halfway done the fourth book. (Except that its my eighth book, because the one I'm fretting over is my fourth book, but this is mere quibbling.)
With my current project rotation system, I've already finished writing the rough draft of the next book before the previous one is edited and submitted. So although I still consider 'start on the next book' to be excellent advice, it clearly it doesn't qualify as cure-all for the submission blues. If it did, I would be completely immune.