catlion... I am a smoker too.
I've tried to quit 17 times now, it never stayed... I regret almost every day having my first cigarette. If it's not too late, stop smoking. I'm currently trying to save up the $1000 for the pill that lets you quit cold turkey (I forget the name at the moment). Insurance does not cover this pill. Insurance does not cover this, nor did it cover all the other assorted patches and herbal pills I've spent money on over the years.
You're still living with your parents, that means that you haven't (hopefully) been smoking for too long, and you still have a choice. I hope you make the right choice that I did not make.
The thing that makes me sad is that someone gave me this exact same speech back when I was younger. I brushed them off and said "I'll quit anytime I feel like it, when I'm ready." I thought I was invincible and kept smoking. I'm almost certain this won't help you, as I'm just an anonymous person over the internet. Noone believes anything that people say on the internet, but I'm at least trying. I hope you make the decision I didn't make back when I had a chance.