Listen bro, I have been forced to quit before and it definately sucks. However, DON'T GIVE IN! here are some tips to help you

1. Drink lots more booze.
2. Take up cigarettes. (I recommend camel lights)
3. Think about all that good shit you'll smoke once you get to college and out of your parents' clutches.

Be strong man, because going to college next fall is way more important than smoking with your high school buddies. And besides, when you do pick it back up again, you'll get blazed out of your skull due to low tolerance. Hope I could help.