It's a weird one, because I literally have no desire to smoke. The cravings are well under control and the smell is starting to knock me sick (I know, I know, how did I never smell that before?!)
I think there's a difference between "wanting to give up" and "being ready to give up". I smoked for over 30 years and always "wanted" to give up, because you know it's doing you harm etc, but the truth is that I enjoyed smoking. Sure, I knew I was addicted, but it was still something I enjoyed doing.
Then last year my mindset changed to being "ready" to give up. I didn't plan it or think about it too much, I just thought to myself one day "I don't want to do this any more" and I just stopped there and then. Sounds like something similar may have happened to you?