I was a 3 pack a day smoker until about a month ago, when I bought an eGo. Since I was a heavy smoker, I got the ego 1000 mah batteries - only a few bucks more, well worth it.
When I first started, a number of posts here told me that it wasn't necessary to try and stop cigs all at once. They suggested I vape when I wanted to vape, smoke when I wanted to smoke, and that it would come around naturally. So I worked with that plan.
I didn't really expect this to work. I'd tried quitting before, and nothing else worked, so I thought this was just another attempt, and that it wouldn't last.
Overnight, starting the day after I bought it, my smoking dropped from 3 packs a day to between 1 and 1.5. I thought that was pretty good. And I kept just smoking when I wanted,
vaping when I wanted.
After a couple of weeks on the eGo, I started noticing that often I would light a cig out of habit, without thinking about it. And pretty soon, I noticed that I'd light one out of habit and as soon as I took that first puff, I'd think "Dang it, I don't need a cig, I could have vaped".
So around 3 weeks on the eGo I started seriously limiting my cigs, and cut down to around 5-8 a day most days. (During that week, 12 was the highest, 3 was the lowest.) And that convinced me. I was smoking far, far less than I had in decades, and I wasn't getting serious cravings, I wasn't getting jittery or hard to get along with. It was bloody well working.
I didn't do as well this weekend. I got sick. I don't think it was related to the cigs or the vaping, but getting well is my priority, and I've been smoking a bit more, partly because if it's related to withdrawal, I'd rather get well first and figure out how to get around it later. And partly because I'm already sick, and I simply don't want to worry about the smokes and the vaporizer, so I'm letting myself smoke.
Honestly, I don't think it's related to smoking/quitting in any way, and I expect in a few days, I'll be feeling better and working my way off the cigs again.
I'm 100% convinced that I can quit the cigs by vaping. A month ago, I'd have sworn I could never quit, and now I'm convinced that I will.
And the forums here are a great resource. Not only are people very helpful when you have questions about a vaporizer or flavors they would suggest or whatever, they also make for a sort of built in "quit smoking" support group. And the vast majority smoked, then quit when they started using a vaporizer. That helps a lot.