The New York Times has a recent article about living long and well. It is targeted at men but one could also apply it to women.
"Gentlemen, 5 Easy Steps to Living Long and Well"
By NICHOLAS BAKALAR
Published: February 19, 2008
The Five Things
1. Not smoking
2. Weight management
3. Blood pressure control
4. Regular exercise
5. Avoiding diabetes
1. Eat more healthy food [more fruits and vegetables]. Only total health nuts eat enough of these. For the other 99%, me and most everybody else, we need to eat more of these foods.
2. Exercise a little everyday. This is not complicated. Do something besides sitting on the couch, eating bon bons and watching TV [my apologies to the makers of bon bons].
3. Do not over indulge in treats. We all have our favorite foods. The food that makes us feel good when we eat it. If you know it is not a good idea to eat it everyday, don't. A couple  of times a week shouldn't be a problem.
Do things in your own best interests.