Dear Shannon,
About the same age you are now was my first attempt at a serious quit...it failed! as did many other attempts, until, nearly 8 years ago I realised I HAD to quit...it was probably my last chance.
I did quit successfully and it turned out to be my last chance indeed! Two years after my quit, I was diagnosed with a Sarcoma...a rare form of cancer, which was also incurable. I fought through the treatment and I am now in remission, which would be great had I not smoked for 40 years!!! The treatment burned away 2/3 of my left lung and leaves me with 1 and a third lungs which were damaged by smoking all those years. Breathlessness is the worst part of my COPD.
I'm telling you all this so that I can BEG you to make this quit you are approaching really stick! The younger we quit the better. How I wish I had made it way back then! You do sound so positive about quitting, and you are determined not be controlled any more. Both those things will help you...a real positive attitude and a determination never to smoke a cigarette again.
Now I'm not saying it will be easy, and you will have anxiety and physical withdrawal symptoms....all to be expected in a drug addict, as that is what we all are. I hope you have some coping strategies thought out for when the anxiety and craves hit. Right now you are having anxiety about the unknown...the act of quitting itself. In a way, when you quit it will be release from that pressure, then you have to be ready for a fight.. This site - SSC - has so much to help you. Use search, and most subjects are covered. Post and we will help you.
Shannon, please think about what I have said, and save yourself while you can. I don't post here as often as I used to, but sometimes a post screams out at me....this was it today. I'll be following your progress and wishing you strength and determination.
Whatever it takes - just don't smoke!
Love Lolly.
PS. In spite of my illness, I relish every day of the Freedom I have from quitting!