And is met with some pretty inspirational responses.
"Putting happy into a book for kids was an opportunity to give the message yet another platform. You can see that there's been a spark," Pharell says in the video.
Not only is he promoting the idea of happiness through his book, but Pharrell is also spearheading a campaign with Penguin Books called #ReadHAPPY, which will donate books to children in need.
"If this book makes one child ask him or herself, 'What makes me happy?' then we've done our job," Pharrell said.
