Enjoy it while you have it because when it's gone it's gone. We all know that at some point we must grow up and for some reason we look forward to it. The funny thing is that people reach an age when they wish they where a kid again. Here is how to make the most of the time you have as a kid.

[edit] Steps

Stay out of trouble. Detention is not the best way to spend your childhood.
Get good grades and have fun at school. When you look back at your yearbook you don't want to be thinking about how much you hated school.
Have fun. Right now you don't have to work, pay taxes, worry about money,or pay bills, make the most of it.
Watch your actions. The things you do now are going to shape you into an adult.
Learn as much as you can. You won't regret it. If anything you will want to learn more.
Buy a yearbook whenever you can.Even if it means spending a snow day shoveling out peoples driveway's.
Do as much as you can. If you don't you'll wish you did.
Take what life throws at you and learn from it.
Keep records. You will look back on them and cherish them forever.