nb_cid nb_clickOther -tt-nb this.style.behavior='url(#default#homepage)';this.setHomePage('http://www.aol.com/?mtmhp=acmpolicybanner081514 network-banner-promo mtmhpBanner
14
Search AOL Mail
AOL Mail
Video
Video
AOL Favorites
Favorites
Menu
1800,banner,pagerefresh-inactive-message
:

dynamiclead

Pause Slideshow,Play Slideshow
521499 waiting in lineJGI/Jamie Grill via Getty
Lifestyle AOL

A key to happiness is not what you think

Researchers found one thing that makes people happy -- and it may be something you think you dread.

1 | 19