Congrats on deciding to quit!! You can do it!!!!
As a quitter myself (eight years ago), I strongly recommend the following:
First, rather than just stopping, stop smoking at ALL the times you regularly smoke (eg, when you first wake up, after eating a meal, when you're drinking coffee, etc.). Cut out those times and instead smoke only at random times. Once you're down to 10 or fewer cigs per day, THEN stop.
Second, either cut WAY back on your caffeine consumption, or stop it altogether. Caffeine and nicotine have a synergistic effect. If you cut the caffeine (maybe to one cup of coffee per day, at most), then you'll make quitting smoking much easier.
Let us know how you're doing! And do hang in there - the cravings, as another person here said, wax and wane, and can often come out of nowhere. It took a year for the strong cravings to totally cease (they were intermittent), and I had smoking dreams for years thereafter. But life is much better without smoking, once you're over the hardest parts of quitting!