if you're a dude, get your wife pregnant, if you're a girl, get prego
all jokes aside that was my main motivation.. after smoking for 16 years without really quitting once (I did 2 years ago for about 8 months cold turkey) it wasn't easy. But I made sure I was always prepared and had everything handy that I needed (juice, atty, batteries, charger etc..) ... it's convenient to buy a pack of smokes anywhere, it's not convenient to get spare parts in a crunch.
It's been 2 months and I don't really crave an analog anymore... and yes, NOT having any on you will definitely help. That means lighters, matches etc too...it helps to find good juice that you like too, which was a bit of a struggle for me the first few weeks, but now I have a ton and should be good for quite a while.