Preschools and kindergartens will become the happiest environment for children when they adopt innovative thinking about the value of active playful learning, have only developmentally appropriate expectations, manage behavior solely with kindness, and, in general, foster healthy social-emotional development and create a joyful, positive classroom. This forward-looking approach is exemplified by Smart Love®, an original and empirically tested psychology that is the guiding principle at the Natalie G. Heineman Smart Love Preschool in Chicago.