I decided to stop being a smoker, and most of the process was about wanting to be free of the control of a stupid little packet of paper tubes. Have you ever noticed how those things CONTROL your life. You can not leave the house without them, everytime you go somewhere you have to stop en route to get some more, etc, etc etc.
As someone else said it is mostly about will power. But I felt I needed something to reinforce my decision and settled on hypnotism. It didn't cost alot, but cost enough to make me think twice about whether I would ever want to have a fag again if I went through with it. I had the hypnotism course just over 3 years ago, and haven't even nearly wanted one since.
I would like to say that stopping was the best thing I have ever achieved in my life, if it wasn't for the fact that starting was the stupidest.
I wish you every sort of strength in stopping. You can do it: lesser men and women have achieved more.