In this video, Toni Antonucci, who contributed to USN&WR’s e-book, [“How to Live to 100,”](http://money.usnews.com/money/personal-finance/articles/2012/09/24/how-to-live-to-100) discusses the happiness factor. She and two other experts focus on areas of people’s lives in which they can influence and control the happiness they receive from the people they spend time with and from their work, as well as the impact on happiness of the nation’s growing acceptance of same-sex relationships.

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