I find that I get the occasional urge, when in situations I previously smoked in. Like working on the cars or drinking, for me. Also the routine, the drive to work and breaks at work.
If possible, break up the routine. Do something new that isn't associated with smoking. If you're having a bad time and think you might give in, try something new! Explore a local park, a new restaurant, or go see a movie. Or go treat yourself to something new to keep you occupied and distracted. Also keeping multiple tanks with different flavors loaded in helps so much. A flavor getting stagnant and making you crave a cigarette? Switch to another flavor to keep interested.
In the end, you're not alone, and we all have our ways of getting around it. If you DO have a cigarette, you're not a bad person and you haven't failed. It might take one for you to realize you hate them and that's that!