The stream-of-consciousness details:
I got started late, due to an unavoidable committment, but was determined to put down at least 500 words. I lagged at least 4-5 times, wanting to stop, even though it wasn't quite time to go to bed and I knew what scene I was writing and how it would play out. I was just tired, and with a bit of a sore throat. I picked a little at previous scenes, adding more to them and changing a few minor things that were affected by new ideas I had. That was almost 500 words. Then, I loitered. I was being a wimp full of fear that what I wrote would suck. Then I poked myself hard in the brain and started writing, because after all, I even knew details of the opening scene. I hit a total of 890 words after a while, and that was so close I mocked myself for stopping there, so went back in until I hit 1008. Huzzah!
I had to stay up late to get some reading in, but the reading was my reward. Not sure why I need a reward for doing something I love, and that is going pretty well, but there you are.