The holiday was started to promote happiness and well being for people around the world. It was first celebrated in 2013, after the United Nations had recognized happiness as a "fundamental goal" two years earlier. It is celebrated every year on March 20.
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Here are ideas for how to celebrate the holiday, from Action for Happiness, the nonprofit movement who coordinates the day:
-Do a random act of kindness
-Find someone who deserves a "thank you"
-Tell someone what you love about them
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-Learn about the practice of "mindfulness"
-List three positive things about your day
-Focus on your strengths
-Volunteer in your community