I quit cold turkey when I quit. I found it much easier once I quit drinking. I'm not saying you have to stop drinking but maybe stay away from it for a couple weeks. I would do well then when I has a beer I wanted to smoke so I quit both at the same time 22 years ago. Also the idea of keeping your hands and mouth occupied is a good one, toothpick, gum, or other.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!