Chronic Obstructive Pulmonary Disease?

I have just found out that I suffer from this and, obviously, must give up cigarettes. The trouble is since I discovered this diagnosis my desire for a cigarette has doubled. I can't smoke at work so I don't - I wear a nicotine patch. However, once at home the old habit takes over and I smoke like a chimney. Is there anyone out there with any advice on how to give up smoking even though you don't want to? No preachers or non-smokers answers required thank you.