You went straight to 0-nic? That's intense
I smoked a pack a day for 6 years. The day after I bought a carton, I decided to go to the vape shop (I figured that if I couldn't quit right after buying a carton, I wouldn't be able to stay off of cigs anyway and there wasn't a point). In fact, I still have a pack left from that carton - the rest I've just given away to friends who still smoke. It's nice having that pack, next to a lighter, sitting in my room - it reminds me that there is nothing stopping me, but myself, from having another cigarette.
With 24mg, it was OK but not easy. However; it was absolutely doable. Being able to go from smoking to vaping is certainly possible, despite what the crap studies the government has been pushing say. I've done it. Many of us here on the forum have done it.
If you already cut that much out, what I would recommend is getting some 6 or 12 mg nicotine juice, and see if that can get you down to zero cigs. Then worry about going from 6/12 to zero after the fact. You could also cut your juice with VG to diluted the nicotine even more - I'm working on moving from 6 to 3 at the moment using added VG in a 6 nic juice.
Like other people have said here: nicotine is NOT the only addictive property of cigarettes. Look at it this way: the addictiveness of vaping is primarily the nicotine (at least it is for me, it was a challenge going from 24 to 18, then 18 to 12, etc). However, the addictiveness of cigarettes is much, much more. Swapping your nicotine delivery device is a huge win already - and it'll be easier to "quit" vaping (if that's what you want to do) after you've made the complete switch.
Think of it like an intermediate step. But I can promise you, that quitting via vaping is much more effective than cold turkey, or using a vaporizer as a supplement and not a replacement.