I quit smoking ~1 pack a day roughly 170 days ago. Shit, almost half a year.
Anyway - this book was clutch. It took 2 attempts and a few weeks to finish it, but it was crucial for quitting (no patches or gum or whatever)
Allen Carr's Easyway to Stop Smoking: Allen Carr: 9780615482156: Amazon.com: Books
DO THIS!!!!
Someone on this forum recommended this book over a year ago and I read it. I was able to quit without any problems. I had tried to quit probably 20 times prior. I haven't had a cigarette or any nicotine since August 2011.
I also suggested this book to my brother and my fiancee and they were both able to quit after reading it too!
However you do it, you'll be glad you did. it's definitely one of the best decisions I've ever made.
Good luck!