A couple more things you can do when that urge hits ... (1) Take as deep of breath as you can through your nose (like an 8 count breath). On the exhale, blow through your mouth and slowly count to four, exhaling completely ... make sure you feel like you can't exhale any more air ... during the exhale, think to yourself, "I've beat you" or "I'm going to win" ... and (2) rub your 2nd (FU) finger and thumb together, and while doing this, think a single word, such as "Never" or "Forget". Soon those urges will be replaced with a very positive mental response.
By the way, it takes the body 3 days to clear the nicotine out of your system. At that point, the physical addiction is gone. The hardest part is overcoming the emotional addiction. But you're strong, and you can beat this! I'm rooting for you ... heck, I'll bet every smoker on this site is rooting for you as well! Kick this emotional addiction in the gonads!
You've got this BB! It's going to be tough, but I know you've emotionally outgrown that crutch of smoking! Best to you and those you love!
Kat ♥