"At 50, I began to know who I was. It was like waking up to myself." - Maya Angelou We've all seen the ads on TV and in magazines--"50 is the new 30!" or "60 is the new 40!" A nice sentiment to be sure, but Jo Ann Jenkins, CEO of AARP and author of Disrupt Aging, disagrees. 50 is 50 and she, for one, likes the look of it. People 50-plus today face distinct challenges and have different goals than people in their 30s and 40s. They're at a different...