I hear this often in our retail stores, and 9/10 times or more the issue here is that your nicotine content may not be high enough on your vape (to start). It is important that you are using a high enough nicotine content to 'satisfy' your urges where you do not need any other supplements (analog cigarette, gum, etc.). This will help you transition yourself to just vaping. As many know, analog cigarettes have many addictive substances, not just nicotine. This will help ween off the other addictive substances aside from the nicotine. I may suggest using at least 16mg or even up to 24mg e-juice if you must for the amount of nicotine you are currently consuming. Whatever it takes to get your nicotine cravings satisfied. Once you are satisfied with vaping, then you can slowly ween yourself down, even mixing on the way if you must. For instance, if you start with a 24mg nicotine, stay there for a couple weeks. Then start mixing it with a 16mg (so you have a 20mg), until you can then use just a 16mg. Then start mixing that with an 11mg, etc. And hopefully you will be down to using 6mg or 0mg within the next 3-6 months. Many want to start with a lower nicotine content right away, and those are the ones that quit vaping because they are not getting their nicotine craving satisfied. So I cannot stress enough over starting with a high enough nicotine content to actually curb your habit.
Trypsky is also correct above, it is easier to cut your nicotine dependency with a mechanical RBA/RDA mod because of the efficiency, however, they are not typically recommended for a newbie vaper because they require some learning and adjusting and a newbie may get frustrated with this and write-off vaping. EGO style can be great to start because they are so easy to use and maintain, and they will satisfy your cravings "if" you use a high enough nicotine content. However, once you get into a MOD (electrical or mechanical) you will never go back to an EGO!
Typically how it goes is: Start with an EGO, then move onto an adjustable/variable voltage electronic MOD to give them more smoke, better flavor and more control over their hit. From the digital MOD, they either use that as their final quitting device. However, many people just enjoy vaping and have no intention of quitting, they often move onto a mechanical MOD.
Hope this helps!