No cigarettes for 7 days!  I did it cold turkey as I didn't want to trade one form of nicotine for another.  Never worked out for me very well before.  I could quit, but would start again as soon as I tried to phase out the replacement.  I was pretty grumpy and even weepy for a few days, but my emotions seem to be leveling off now.  I have been very relieved that the cravings haven't been overwhelming this time.  I guess it is true that when you are entirely ready, it is much easier!