When and where do you do your best thinking? In the bathroom? While running? Just before bed, or first thing in the morning? On the bus? Why do you think that is?
I’m a morning person, so my best thinking is usually first thing in the morning. That said, recently I find myself just drifting off to sleep and something will come into my mind, something which i know is important and mustn’t be forgotten, to the point where it wakes me up again. I’ve started keeping a notebook and pen beside the bed, because it’s easier to jot down whatever is in my mind so that I can get to sleep and focus on it properly in the morning.
I’ve occasionally dabbled in writing, and it tends to be story ideas which keep me awake. If I didn’t write them down I wouldn’t have any chance of recalling them in the morning.