You can do it. One thing I've seen work for people is making a significant investment into a smoking counter measure. Extreme example, hire a personal trainer

You can do it. One thing I've seen work for people is making a significant investment into a smoking counter measure. Extreme example, hire a personal trainer for $75/hr and go to the sessions 3x per week. Now you are investing $225/week into your health, and you're going to want to get maximum ROI from that investment, right? Well, smoking is diminishing that ROI. Secondly, you have someone encouraging you to do the best possible work you can do with your body every time you go to a session. You'll naturally want to avoid disappointing that person. You'll also want to see continued progress in the results they are measuring. Smoking will impede that progress, and again, minimize your ROI. This worked for someone very close to me after everything else failed. Incidentally, that person stopped going to the trainer after a while, but only after quitting "stuck". Good luck in your journey and never quit quitting.