Often what seems to be a depressing situation is due only to the lack of fresh air. Get out into the air and breathe deeply, or at least open the window and fill your lungs.
Your emotions become normalized when your body is invigorated by the influx of cool, moist and moving air. This often has immediate effects. Drink deeply of the Almighty’s bounty, and inhale a lungful of the champagne of life.
Sources: Sing, You Righteous, p.315; Rabbi Zelig Pliskin’s Gateway to Happiness, p.182