This deck of cards is no game. It’s the happiness-boosting toolkit of professional psychologist Deepika Chopra—best known as the optimism doctor—who wrote these fifty-two suggestions based on her years of helping clients get to the sunny side. On each card, you’ll find a mindfulness practice to cultivate good thoughts—to keep on your desk, carry with you, or pass off to a friend who deserves a lift.

• 52 cards