I went from not believing I could ever quit to not smoking at all in less than a week. I used 18 mg mostly, with some hits of 24 here and there, and I got some WTA as well, which I think really helped with the cravings I experienced on occasion. But I've not been able to reduce my nic that much. I tried dropping from 18 to 12 and found it unsatisfactory. 15 was OK though, so I stuck with that for several years. I took another couple of years to wean myself down a half a milligram at a time to 13, where I've been stuck for a couple of years now.For me it was, but I understand that we are all different in what it takes to get off the smokes. Back when I started in 2010 there were concoctions made with tobacco alkaloids from wet tobacco soaked, squeezed, and filtered to create a solution to add to ejuice. Some swore by it, but for me all it took to quit was vaping 24mg juice. Did that for a year or two and began the move down to 3mg nic juice.
Early on, I thought: If this worked for me, it should work for anyone. But it doesn't. Some take to it, some just don't.