The author has been thinking a lot about happiness lately. This started in earnest when she watched researcher Shawn Achor's 7-minute TEDX talk, entitled "The Happy Secret to Better Work," with parents and staff. Afterward, she was compelled to buy his book to learn more. "The Happiness Advantage: The Seven Principles of Positive Psychology That Fuel Success and Performance at Work," based on Achor's work at Harvard and companies worldwide, goes into detail about how people can all be happier and more fulfilled. Reading it, the author was struck by how Achor's principles are embedded in Montessori philosophy and curriculum. Once again, Montessori proves to be cutting edge, even 100 years later! Presented in this article are some thoughts on a few of Achor's principles on happiness and how they relate to Montessori.