We all have days where we wake up and can't remember diddly-squat, right? No dream recall at all, despite all efforts to coax out at least a tiny little thing. It would be all too easy to say: What's the point of writing in my dream journal today? Nah, I'll just skip the day...
But actually, we should not do that – it's important to continue with the daily ritual of dream journaling in the morning even on zero recall days. I'm pretty sure that my dream recall picks up again faster when I don't neglect my journal on those days. Trust me, I've skipped days in the past and that led to more days of radio silence.
I write down what I last remember from the evening before, how I slept, if and when I woke up during the night, if I tried out any technique, anything I can think of... And/or I re-script dreams I had before the dry spell – how they would have gone, had I become lucid. We talked about that yesterday with a few people, and @Conner Edgar summed it up perfectly: "Just map the night, even if you can't remember any dreams. This helps your brain understand that what happens at night is very important to you and you want to remember what happens during that time."
A few times, just when I was ready to admit defeat and write down "no dream recall", my brain at least coughed up something like "a lot of people in dark clothing". And sometimes, a dream just pops up in my mind later in the day. What do you write in your dream journal on zero-recall days?