You wake up to a gray window, know in the muscles that hoist open your eyes that the day's not going to start well, and furthermore, you're not sure you have the inner resources to salvage it, starting with the failure to sleep and continuing with not enough hot water for a shower worth taking. Late to work, having pitched a fit that needs a bouquet of apologies. Anxious, anxious. Texting sorries to all and sundry.
Text! What you really need is to push "reset" starting at ten the night before. Make yourself go to bed instead engaging in your usual jangled assortment of keyboard-and-screen activity. Sleep. Wake up to a gray window, and know with the very least flutter of your eyelids that it's Friday, a good day, and you certainly know how to go with that.