Give E-cigarettes a try,when you take a drag,they atomize nicotine into vapor,no smoke to damage your lungs,but still kills the urge.You can get varying nicotine levels in refill liquid and taper yourself down to a 0 nicotine level.They even have refills in assorted flavors.I had/have the same problem,quit cold turkey,start buying bigger clothes.The e-cigs also help me after the 33 year habit by holding something that looks and feels like a real cig.The nicotine isn't what does the damage,it's the smoke itself along with all the other chemicals in it.
But word of warning,don't buy the cheapo's that you see at the gas stations,they are junk.A decent starter kit online will run you about $100 plus your refills.Sounds expensive,but what are you paying for a carton of smokes or 3 new bigger pairs of jeans?
I'm now on the lowest nicotine level now (2.5 mg i think) and in a few more weeks i'll try dropping to the 0 nicotine refill.My wife likes the flavored refills where i enjoy just the regular tobacco flavor.But after my body acclimates to no nicotine,then it will just be a matter of breaking the habit of holding one (i'm hoping).
I know exactly what you are going through and,for me,this has been the best and easiest way i've found without going nuts or putting on more weight,which I have enough extra padding already,lol.