Do not dwell on your nonessential numbers in life. Pay attention to the big things in life, and don't get too wrapped up in numbers. If you only dwell on your age, your weight, or your shrinkage, you can miss out on things that can keep you young.
Eat healthy. Keep your diet low in fat and sugar, but balance it out with many fruits and vegetables. You can be both physically and mentally healthy if you have a proper diet.
Happiness is contagious, and you should spread it whenever possible. If you are making other people feel good, you will feel good. A simple smile or a kind word is enough, and you should notice that other people treat you better.
Ask your doctor about supplements that can slow down the effects of aging. You should have a balanced intake of antioxidants, multivitamins and possibly anti-inflammatory medication. The benefits from these are that they allow you to be more active, and if you do have aging issues, you'll have less down time. Integrate these supplements into your daily self-care plan.