[Kamog]

One of my co-workers is in his mid-70's and he is a total weirdo. Some people are just weird regardless of their age.

If I could go back and relive my teenage years, I would:

Learn to drive as soon as I was old enough to get a driver's license and not wait until many years later when I got a job.

I would learn to ride a bike and swim early as possible; actually I would have done it before my teenage years. I didn't learn to do these things until about my third year as a university student.

I would have spent more time exercising. I would have done some weight training and played some sports while I was a teenager. It's more difficult to develop physical skills and strength later in life if you haven't done anything while you were young.

I would have spent my school holidays more wisely rather than squandering them by sleeping in every day and watching too much TV.

I would have learned to play a musical instrument.

I would have invested some money early, so that compound interest has time to work.