Being in my mid forties, I guess this thread applies to me. LOL. I'm going to answer this before reading on to see what the rest of you think. When I read on I feel that everyone else has done such a good job of answering that my response is not needed (or not as smart as everyone else's).

I think the key to aging gracefully is to keep up with the times. Learn new things and don't become overwhelmed by new technology. Of course, excercise and eating healthy are important too. Most importantly is to keep the mind active and try to keep a positivie attitude.