Although it might be slightly expensive at first, make sure you have sufficient stock at home. Plenty new coils,, a backup battery, plenty juice in different flavors, etc.
This should prevent you to have to go back to regular cigs when you don't want to.
As mentioned above, undoubtedly you'll be throwing stuff over time. Your taste and preferences will change and with it your equipment and juices.
Still, compared to your, hopefully, old habit, in the end you should be of way cheaper.
Happy vaping...