I went through the same thing when I quit. My theory was that the body stores nicotine in your urine. Seriously, try chomping on a cocktail straw. It keeps your hand and mouth busy. What also worked for me, is don't light that cigarette for about a minute after you've picked it up. Sometimes just having it in your hand or mouth is all you need. Crazy but true. Also, try drinking at home, stay out of the smoky bars for a while.