Centenarian secrets

There were more than 53,000 Americans who were at least 100 years old as of the 2010 census, and the number is expected to soar to more than 600,000 by 2050. Undoubtedly, many of these long-lived Americans have been blessed with good genes, but many also share common habits that have helped them in aging well, according to the new book "Celebrate 100: Centenarian Secrets to Success in Business and Life," based on interviews with 500 centenarians.

"I love to share the wisdom of the older generation. We need to hear it," says co-author Steve Franklin, a former professor and associate dean at Emory University's Goizueta Business School, who collaborated on the book with Lynn Peters Adler, the founder and director of the nonprofit National Centenarian Awareness Project.

1) avoid taking on debt
2) find work you love
3) delay your retirement
4) save at least 10%
5) diversify your investments
6) learn to be resourceful in tough times
7) plan for a long life
8) exercise
9) maintain a positive outlook
10) stay in the habit of learning