Hi Mervyn,
I've just joined this site, not a diabetic myself but my brother is. However I did give up smoking. I could not give up just by stopping and can really understand if you can't either. I just stopped myself each time I let up a cigarette and asked myslf whether I was enjoying it or just smoking out of habit/addiction. If I was smoking out of habit I put the cigarette out, but if I was actually enjoying it I carried on. It took a little longer to give up, the ones after a meal and with alcohol being the worst, but eventually I realised it was habit/addiction. I gave up approx 25 years ago. Occasionally (maybe twice a year) if I have had way too much to drink I might have a cigarette still, but either I immediately put it out because it tastes so disgusting, or in the morning I hate the taste in my mouth and the smell in my hair and on my clothes..... it definitely stops you wanting to light up another.
Good luck with your quest, and if you don't succeed.... don't give up trying to give up :thumbup: