This was pretty common for me. Since I've been on meds that control my hallucinations and delusions it happens less often. I still space out a lot and have trouble, especially in the morning with figuring out what happened in my dreams versus reality. It took a few years and some hospitalizations but for the last 4.5 years I've been hallucination and delusion free. I'm thankful to no longer have the girl living in my closet and I suspect your clown is just as intrusive. If you haven't sought medical help yet I'd encourage you to do so. It's amazing how much better life can be on the right combination of meds.