I'm struggling with this, right now myself. When I got my first pv. (the Riva), I quit the same day. It seemed so easy I couldn't believe it! Then at about week three, it got somewhat harder. I was trying to share equipment, for one thing, but even when I got another set up, I still felt really distressed and wanted to smoke. When I did smoke, I didn't hate it, like you hear some people do, after vaping, but it was different. I didn't finish the whole cigarette, I felt like I'd already had a whole one after just a few drags!
I still smoke a cigarette or two a day, usually, 1/2 of one at a time. I do feel the health benefits already though, so I want to quit for good. I am increasing my nic level, to see if that helps. I think if I can just get the find the right routine: right pv set up, right juice, I can quit more comfortably. Right now, the juice seems to be my biggest problem, What I like one minute, I can't stand the next, the taste changes, or my lips and mouth burn... That gets aggravating, and makes me want to take an extended break from vaping. That's usually when I smoke.