Oh yea, one more suggestion. Try DIY. Making your own
juice will teach you all the ins and outs of
juice, and how simple it really is. And making extra strength juice for those craving emergencies is then cheap and simple. It will get you so invested in this "hobby" you won't have much time to think about smoking

. Hard to explain but I believe that has helped me. Plus makes it very easy (and cheap) to experiment and fine tune things like NIC level and PG/VG ratios.
You might also try an inexpensive dripper. Dripping is another way to get further "invested", especially if you combine it with DIY (they go hand in hand). A dual coil dripper on top of a DNA40 with the right juice and nic strength should kill any craving you might get.