Extremely! The creepiest was during my first attempt at writing a book. It was thirty years ago, and scared me so badly I nearly quit writing forever.
I was so motivated, but inexperienced and struggling. I kept a dictionary within arm’s length at all times. I would get home from work and write until I fell asleep pen still writing but without direction.
Just a guess, but I think I got my creative juices wedged into overdrive, making my dreams crazy, and very real. My REM brain was trying to fool my rational self.
It started with dreams like a gang on motorcycles crashing their bikes right through the wall of the house, holding me captive, and torturing me. After a couple of nights waking up drenched in sweat, I reminded myself of how to defeat the dream by saying during it, this is a dream. I did that, and woke up. Of course first thing, I had to go to the bathroom. While I was on the toilet, I heard the loud roar of several motorcycles in the neighborhood, then I heard them pull into the driveway. Someone knocked on the bathroom door, and a man said, hey, girlie, we have something to finish. I woke up so freaked out I almost threw up.
It kept getting worse. I would wake up, realize I was still dreaming, wake up again, four times, five. I would get ready for work, get there, be doing my job, and suddenly the walls would start bleeding. I never knew for sure if I was dreaming or awake.
I tore up my work and burned it. It took me quite a while to get over the sheer torture of my own convincing imagination.
When I again decided to write, I was so nervous. I set some rules for myself. It was a slow start back.
TJBM has a dream they would like to share, nice or not.