Hi, I tried hypnosis once, along with just about every other "cure"....It was expensive, but hypnosis did work to help me stop smoking... for about two hours.
I too have been smoking way too long, almost 26 years now, and seem to become more addicted everyday, but I do enjoy so very much the comfort I get from puffing on a cigarette, and have pretty much resigned myself now to be being a lifelong smoker, But, good luck to you in your efforts to quit!