Just in case:
burn the midnight oil
Fig. to stay up working, especially studying, late at night. (Alludes to working by the light of an oil lamp late in the night.)
The photo above reminds me of the lamps we had when I was growing up. OK, I'm not THAT old - we used them for power outages.
As for me it's led to this:
Photo: Dennis Kitchen/Getty Images
Pretty much sums up where I'm at:)
And remember to follow my motto (though I may stray):
Sleep. Play. Create.