Ha! I'm so glad it's resonating with people because as a writer I work alone most of the time and sometimes I feel like I'm the only person who goes through this stuff, although, over the years, I have seen people on Twitter make comments that have made me go "Yeah... that's hitting home...".
Today I crawled into bed without the coffee. I was working, it was going well (I thought), and then I suddenly got hit by a weird exhaustion thing, which sometimes happens when I am thinking a lot, that flipped off my mind (I think it might also have been that I hadn't quite recovered from the jam) and I ended up in bed for hours, frustrated because I was on a deadline but a total goner. So I feel you. Today was clearly a day for us both!