If you're happy and you know it, clap your hands! What? No one? If the most recent happiness research is any indication, Don Draper of "Mad Men" isn't the only one who's not jolly despite achieving financial success. The U.S. ranks No. 1 in average household wealth, compared with 36 other nations, but it is 13th in the smile sector. But don't fret. You can still channel your inner Phil Dunphy, from "Modern Family" fame, to attain joy. Here's a primer on how to get happy – and stay that way.