I smoked for awhile, and spent most of that time trying to quit (I'm asthmatic), but couldn't. I went through too many gas station disposables before getting a Vapor4Life Zeus, which I haven't had for very long (I recommend it, but it's a bit pricey). Try different juices and different setups, and try to make the switch at your own pace. I smoked for awhile even while I vaped regularly, and now cigarettes have become a treat more than anything. Get a few bottles of juice in different flavors and strengths, see what you like and what nic level works for you. I started out at 24mg, and now I'm down to usually 11mg/14mg, so don't start low, but try to decrease the level as you feel comfortable.