Welcome csantiago, you've come to a good place! I'm a new vaper and former dipper for 2 or 3 decades or so, and smoked for about 17 years or so to boot. Quit smoking about 16 years ago when the wife became pregnant, but doubled up on the dip to keep the nicotine monkeys beat down. So far I'm tobacco free since October 16th of 2013, so over two months without a dip. You can do it! Since I smoked, the vaping just felt "right" if that makes sense, but I did go through a few days where I could have eaten a can whole. I'm vaping 18mg now, and prefer tobacco flavors, and thought of stepping down myself, but I'm not quite ready I don't think. I still get the urge to dip every now and then when puff-puff-puffing isn't quite doing it...but so far I haven't had one. I still have my last can in my jeep, and when I really want a dip I get it, take the lid off, think how nasty of a habit it really was, how my gums would get sensitive, etc...and then put the lid back on and congratulate myself for riding out another wave. Then I puff-puff-puff some more, lol.
You'll get there man, you just have to take it one no-dip at a time. I might recommend starting with 24mg nicotine though, or at least get a bottle of that strength to keep on hand for the rough spots, and use 18mg or maybe 12 when things are going good or later in the evening so you don't get wired. Also, if you're like me, in a few days your sleep habits will get wierd...you'll be fine, then all of a sudden a wave of sleepiness will come over you and you just can't hold your eyes open. Other times when you're normally getting ready for bed, you'll be wide awake like you slept for hours or something. It probably took me 4 or 5 weeks for my sleep cycle and body rhythms to get back to normal, but that may just be my body adjusting and your milage may vary.
Anyway, I've rambled on long enough, it's after 1:00am here and I have to make myself go to bed so I can get up at 6:45 tomorrow. Ok, so maybe my sleep cycle hasn't quite gotten back on track, lol.
Congrats again though man, great support system here in this forum, and they don't mind you pestering them with "newb" questions either (not TOO much anyway, just remember, sometimes THEY start "nicking" too you know!)