Actually its 'Easy Way to STOP smoking'. Quit means there is something to you are giving up. There is nothing to give up in smoking.
Amazon.com: The Easy Way to Stop Smoking: Join the Millions Who Have Become Non-Smokers Using Allen Carr's Easyway Method (9781402718618): Allen Carr: Books
I read the book few years back. Really easy to stop smoking with that book. You just read the book from beginning to end, continue to smoke while reading it or even increase your smoking habit if you want to, but by the last page, you'll have your last cigarette, not much will power required. Highly recommended rather than those other methods which just reinforces smoking or some other bad habit.
once you get into the habit of being healthy, you will get "addicted" to being healthy, you will look forward to running the next day and going to gym, you will feel bad about eating unhealthy food, this makes it much easier to quit