Congratulations .. not sure what method you have used, but I would highly recommend "Allan Carrs" Easy way to give up smoking book .. even if you've already given up.
I tried giving up, numerous times, but didn't quite conquer it, until I read this book. Local libraries have a copy, so no need to buy it, but it's certainly worth a read, to keep you off the smokes for good, as it makes you (at least it did me) look at smoking in a totally different way. I would never go back and I could never say that before.
I gave up 4 and a half years ago .. it's a great feeling being a non-smoker