that is really hard to leave the habit, but I am not planning to leave it in one go, but I will reduce it, brother of mine used to smoke a lot but suddenly he stop it without any reason and leave it forever without any trick. I asked him how to do it, he just said " I Just dont like it anymore, and I dont know what happen and why". I thought he was kidding me when he gave half of his remaining pack to me, but since that time he never touch it again ever.