Have you read the not-so-chatty-man Alan Carr book?
It worked for me, I think the important thing is to get it into your head that you’re not missing out on anything by not smoking but gaining something. Cutting down doesn’t work you need to break the cycle and stop dead, get all that adictive crap out of the bloodstream. As soon as you have one you’re back to square one again, so don’t.
Good luck!
Edit: smoked cigs and a very large amount of weed for 19 years, now 19 months completely smoke free.