Vitamin supplementation has been crucial for me to stay and feel my best. You can never do enough research on this subject, as most of us are not getting enough of the nutrients we desperately need in our diet and when we suffer the symptoms of this deficiency, we simply think we are getting sick and pop a pain reliever.
For skin, ALWAYS moisturize with the correct moisturizer for your type. This to me is far more important than sun protection, as many skin experts are now saying we are overdoing it with the sunscreen as it blocks Vit. D formation which is crucial for our health. Also, exfoliation is crucial for facial skin to maintain a youthful appearance, and doing it regularly is important. Last but not least, find a good eye cream, as the eyes are the first thing to shows signs of aging on the face. I have been doing all these things since I was a teenager and most people guess my age at 12-15 years younger than what it really is.
Daily exercise is also crucial, but it doesn't have to be hard or brutal. A simple walk on the treadmill or around your block for 30 minutes a day will do, as will hopping on a bike -just do something of moderate activity for 30 minutes a day. Yoga is also wonderful to keep you limber, and I love doing it.
Hope this helps, and good luck to you!