Aging gracefully?

Trying to get into shape and thinking of all the things I might want to do before I turn forty to help make myself feel not quite so frazzled at hitting the big four oh, I find myself looking at everything from how much weight I want to lose to options such as potential age spot removal in the future years. I have not quite decided on the age spots, because that would be like coloring my hair if it started to go gray, and I have never considered that to be a problem. I guess as I get older, though, and realize that the second half of my life is going to be my dating years, I am getting more concerned about stuff like that than I ever was in my teens and 20's.