"Outer order contributes to inner calm," says Gretchen Rubin of The Happiness Project.

The Happiness Project: Gretchen dives into how you can become indispensable (and whether it will make you happy).

Minister Ellen Tang was appointed on the first anniversary of the launch of the Happiness Project.

The Happiness Project is the title of Charles Spearin's debut album.

Spearin released 'The Happiness Project' in 2009, a collection of interviews with his neighbors set to music.

The best-selling author of The Happiness Project reveals 10 must-know secrets for surviving your next family vacation.

In 1994, he founded "The Happiness Project".

Comedy Central announced an "Untitled Cyanide and Happiness Project" in 2011.

In 2005 she performed at the charity show "The Happiness Project" for mothers in Shenzhen.

What's the Happiness Project?