CNN's Dr. Sanjay Gupta shares his top health advice as the world rings in the new year. | CNN

In his new book, Dr. Sanjay Gupta explores America’s chronic pain crisis, noting that 50 million people—about 20% of the population—suffer from it. He links the rise to aging, sedentary lifestyles, loneliness and inflammation, but stresses that pain doesn’t have to be as severe or long-lasting as many experience. | CBS Sunday Morning