From what you've described, I'm going through the same thing and I understand it's completely down to my lifestyle choice and work. I'll be trying lots of these comments (thanks everyone) to see if I can improve / lift my brain fog. I can say sleeping around 10 after half an hour of no technology is bliss, have a shower, prepare your clothes for the next day so you have nothing but me time in the morning. It feels good to wake up, grab a coffee and read a book.