It's more than a little on the nose, but Jupiter, the Bringer of Jollility by Holst, especially this abridged arrangement, is something I reach for at the end of a rough day. Usually stops me from going to bed mad, or in a thought spiral.

That it's a relic of the flash mob fad from however many years ago doesn't hurt, either. A spoonful of ironic nostalgia helps the medicine go down.