The day I received my e-cig I charged the battery and I quit regular smokes after taking three drags from Halo Sub Zero 24mg and got a buzz I hadn't felt in a long time. I've been smoking 1.5 to 2 packs of menthol smokes for 20+ years. I did get myself to really hate regular cigarettes(ashes, tar, residues, chemicals, taste, smell, cost, etc), so it was sort of easy to quit. I went through three 7 ml juices quickly after I had adjusted and built up a quick tolerance to the more pure nicotine. Initially I took the 3 puffs and was good for almost an hour. Now I'm chain vaping but I feel soooo much better. My lungs expand much easier and the burn in my throat is gone. Just bought my own nicotine PG mix and some VG with some flavorings. This is going to be so much cheaper than tobacco or retail pre made e-juices. I did quit smoking for 5 months before but out of the blue the craving came on and then off the wagon I fell. I will try to slowly lower nic levels over time rather than abruptly quitting. Less stress on the body and mind and less chance of relapsing. I'm wondering if I will be able to quit vaping, though. Even if I get to a 0% nicotine e liquid I might want to keep vaping anyways. It's fun and tastes good. Hmm.