Keep on believing and you'll keep on longer

We now know that underestimating the obstacles life has in store lowers stress and anxiety, leading to better health and well-being, Tali Sharot reports in The New York Times.
This is one reason optimists recover faster from illnesses and live longer. Believing a goal is attainable motivates us to get closer to our dreams. Because of the power of optimism, commencement speakers who enhance