GHB100R
Definately get youself in the cadets. I wish I had.
Im 24 and have only just started my PPL. I hope to be an airline pilot one day.
Wish I could turn back the clocks and 'get on it sooner'...
My advice is, do as best you can at school, work part-time and have a few flying lessons when you can afford it. Get in the cadets and let them help you.
Good luck mate.