Philip K Dick wrote about being out of the heat of God's light, not feeling the scorching heat of the palm tree garden upon us. I believe it was from one of the VALIS novels but I haven't gone back to dig it up, and could be wrong.

Personally, I find I sometimes have trouble accepting good enough solutions. I want more structure, a better defined start. At night I can drop into a productive flow state with much less resistance, ignore many of the day-time wants. The hours run short; let's seize what we can from the waking hours. As well that "inspiration," I think there is probably a physiological barrier lowering that happens as we go into the night. As we recede from the gods' light, as it were.