you might want to make sure the level of patch you are on is the right one based on how much you smoked before you quit. I was never able to use the patch cuz I got the shakes too. Zyban works for some people. make sure you clean out all your smoking reminders (Ashtray) and anything that can smell like smoke. maybe buy an air freshener for car/home...try to change your routine a bit to keep your mind off it.
i used to chew on straws and carry a few cut up ones around cuz some are about the width of a smoke and they can keep both your hands and mouth busy...
also lots of water and try to exercise some if you are able.
other people have tried accupuncture, or being hypnotized...
Hope it gets easier for you! Good luck!