Speaking of, I've recently started using a daylight therapy lamp 10k lumens @ 10-30cm for at least 20 minutes within 1 hour of waking up: the first few days, the effect is dramatic. Later, when the body is readjusted you don't feel it as vividly, but if I don't do it for a few days I can feel my mood and energy drop. I recommend everyone who doesn't get much light (bright enough to make you squint) in the morning try it.