Recent article found that older people view themselves 13 years younger than their chronological age. Read more at the NY Times health blog.
My experience is that although our bodies may feel like their physical age, the vast majority of patients don't feel or think any older. No wonder the phrase "young at heart" is often repeated particularly at birthday parties.
Be sure on your birthday to remind yourself to get all of the preventive screening tests you deserve and that you are doing all the right things, exercise, don't smoke, lose weight, so that you will more likely be around for the following year.