Making Youth and Beauty Last

I’ve loved a lot of things about being in college, but I think I loved one thing the most: being young! They say that youth is wasted on the young, but I don’t think that’s true of me. I really appreciate feeling good and being pain-free, active, and — well, if not “beautiful,” then at least as beautiful as I can be!
I’m graduating soon, and that has me thinking about growing older. I don’t mind getting old (as they say, it’s “better than the alternative!”), but I do want to make sure that you keep as much of my youth as Father Time will let me hang onto. So I thought I’d ask the experts: How do you recommend I keep my youthful beauty and energy? I know I should stay healthy and all of that, but I’m no expert in skincare or anti-aging techniques.