I Want You to be Happy Day is observed by all people who want someone else to be happy on March 03, 2019. To celebrate the day you should do something to make others happy, especially if they are sad at the moment. Putting a smile on other people's face should also make you happy, so there's one more reason to celebrate the day. To make someone happy you could give them a hug, tell a joke, or just let them know how much they mean to you. Unfortunately, the creator of this holiday is unknown. However, it might have been someone who knew a person, which was very sad that day.