Your social circle might be the key to a long, happy life. That’s according to Simon Sinek, a best-selling author and ...

The simple act of being a better friend — and having close, positive relationships in your life — can make you healthier, says bestselling author Simon Sinek.

In 2005, Simon Sinek ’95 seemed to have it all: his own advertising and marketing business, high-profile clients like General Electric and ABC Sports, an upscale apartment in New York City, expensive ...