Unemployment can be particularly devastating for young adults in high-income countries.
Communities that invest in bike paths, parks, walkability and public transit have more success in key aspects of well-being.
Leaders need to engage millennials right now to seize a well-being opportunity for their organizations.
Americans have major problems with their well-being -- but millennials may help turn the tide.
As President Barack Obama prepares to leave office, Gallup and Healthways are publishing a new series examining how Americans' health and well-being have changed during his eight years in office.