For me it happens in the shower, the moments just before I fall asleep, or upon waking from a nap. I can't count the number of times I wasted hours up late at

For me it happens in the shower, the moments just before I fall asleep, or upon waking from a nap. I can't count the number of times I wasted hours up late at night trying to force a solution only to give up and have the solution come to me clear as day the next morning.