Here's living proof that it's never too late to follow your dreams.
After Lisa Fisco's husband left her and her three children, she gained more than 100 pounds. Seven years after her divorce, her children decided to move in with their father -- and that plunged her even deeper into depression.
Then, at age 47, she decided to pursue a childhood dream: to train for the U.S. Olympic weightlifting team. She is going for a spot on the 2012 Olympic team; if she makes it, she'll be the oldest woman to ever compete in the event.
What an inspiration!