The Sufficiency Economy is a philosophy developed by King Bhumibol Adulyadej of Thailand through his royal remarks over the past three decades. The Sufficiency Economy is a happiness development approach, which emphasizes the middle path as an overriding principle for appropriate conduct by people at all levels. The middle path is a way of thinking in which no one lives tooextravagantly or too thriftily. It encourages people to live in a way where they consume only what they really need, choose products carefully, and consider their impact on others and the planet. The sufficiency economy enhances the nation’s ability to modernize without defying globalization – it provides a means to respond to negative outcomes caused by rapid economic transitions. This philosophy is a guide to making decisions that will generate outcomes that are beneficial to the development of the country.