First of all, learn the words to the Pharrell song, Happy, and sing it to your friends, family and study partners.
Next, here is a list of things you must do to be happy. Do them!
When you have finished doing those things, here are another ten things you must do.
When you are tired of doing things, here is a list of things you must stop doing.
Try this – take a photo of something that made you happy every day for 100 days. Full instructions here.
Finally, have a look at some of these videos made by happy people all over the world.