Chelsea Falcetti, who owns The Plan salon in Holyoke, Mass., tells PEOPLE she was "completely shocked" by how quickly the video took off Georgia Slater is a staff editor on the Parents team at PEOPLE.

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We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› by Rachel Wharton Whether you want a big, feature-rich refrigerator or a smaller, ...

Happiness is an electrifying and elusive state. Philosophers, theologians, psychologists, and even economists have long sought to define it. And since the 1990s, a whole branch of psychology—positive ...