That's it, really. Just had yet another massive argument about the fact that yet another of his half hearted attempts at stopping smoking has ended in yet another pathetic failure and he's back on the fags again.
Then he uses the ensuing argument as an opportunity to deflect and chuck at me various things I do that wind him up - as in 'well I ask you to be more tidy / be more organised / stop worrying about things etc etc so why should I stop smoking just cos you ask me to, if you can't the effort to do the things that I want you to do'
I am fucking livid. Well actually I am terrified of him keeling over with a coronary or wasting away with cancer and leaving me a widow and the dds with no father. And I am disappointed and cross that he knows how much it means to me. And I despise the twisted tit-for-tat logic he trots out.
So I guess I've made it worse by losing it and calling him a selfish pathetic inadequate twat, too weak to manage 7 days without sucking on load of death sticks, which he must love more than he loves his children. And it's now turned into one of those nightmare massive sunday arguments 
So...... aibu? How can I be more grown up and helpful and constructive. btw I am an ex smoker (20 a day at one stage, stopped 10 years ago) and I feel if I can give up, why can't he?