HELP! I want a cigarette! Anybody been through this horrible experience of quitting before with some advice?

After smoking for 30 years, I finally decided to quit. Hooray, strike the band, all that jazz....I'm doing the patch which for the last 3 weeks has been working pretty well. I get urges, but not that bad, but I had a really, really rotten day and all I can think of is smoking a giant ciggie, about the size of my arm!!!! I want it so bad, I'm about to steal one of my hubby's cigars and sucking that until I puke.....HELP. Any advice on what to do when those really bad cravings start?