A great tennis career is something that a 15-year-old normally doesn't have. I hope my example helps other teens believe they can accomplish things they never thought possible.

As the proud father of two teens and past Chairman to the Presidents Council on Physical Fitness and Sports I am committed to educating parents and especially young people on ways to live a long healthy and active life.

It wasn't being an alcoholic - it was going wild. It happened when I got famous. It was like having my teens in my early thirties: blotting out your life not having to think about anything.

In the 20 long hungry years between my late teens and late 30s I bought in to virtually every new diet and/or exercise regime that hoved into view particularly at this most vulnerable time for those of us prone to poor body image - a new year.

Looking back video game design seems a natural fit although there was no such thing when I was growing up. I built a Tic-Tac-Toe playing machine in my teens which went up in smoke on the night it was scheduled to go to a science fair.

My dad? He died when I was 19 which is a bad time for your dad to die because there's an awful lot of things you have to resolve with your parents past your teens if you've been a difficult teenager.

I was never considered cool throughout my teens: a very important time to be accepted by someone especially your peers. Yes I had all the screaming women but the guys hated my guts.

In my teens I was never part of the cool crowd.

To my surprise my 70s are nicer than my 60s and my 60s than my 50s and I wouldn't wish my teens and 20s on my enemies.

The truth of the matter is beauty is a specific thing rare and fleeting. Some of us have it in our teens 20s and 30s and then lose it most of us have it not at all. And that's perfectly okay. But lying to yourself that you have it when you don't seems to me simple-minded at best and psychotic at worst.