Anyone who started the habit of smoking agrees that it is doubly hard to curb the habit than to initiate it. You merely take a puff or two and if you are the sort who enjoys the sensation of having smoke pass through your wind passages and you will be all set. Easy-peasy.
Stopping the habit once you are hooked on it is an entirely different story, though. I read a lot of problematic withdrawal syndromes and one too many stories of struggles to curb the bad habit. Some would even resort to hiring shrinks so they can work out their magic with their heads and forget about smoking and cigarettes altogether.
I believe though, that as with any other vices, it takes pure heart and determination to kick smoking for good out of your system. You need to build a rock solid wall that no sudden urge can penetrate and you also need to get all the help you can get your hands into. You can check out alternative products to help you with your transition. There is this one site that features cigarrest reviews that I thought you might be interested in. You also need all the encouragement and support you can get, so let your loved ones and families in on your plans and intentions to quit smoking.
If you follow all that, you will be a changed man in no time at all.