Thing is with fags, and is in alan carrs book and he is spot on.. Whatever your mind tells you...
1) You are only addicted to nicotene. Nothing else...
2) You are not addicted to the taste, putting smoke in your lungs, or tobacco itself. That is impossible. Used to it yes, like it? maybe... addicted? no.
When i went on vape (just a petrol station £20) i reminded myself of the following..
1) When gasping for a fag, have as many chugs on the vape as you like. Wait 2 mins and ask question... are you still gaspig for a fag? Answer is awlays no. (see point 1). I do 18-24mg strength liquids.
2) You will save money. E juices are cheaper than all fags.
3) You will not smell like a wet sewer/ash tray.
4) Administering nicotene via vape is 95% safer.
5) Better to be chigging on a vape all day than 10 fags a day. If you need a hit, just take one.
6) Its ok to have baccy in a spliff while you give up the fags. If anything this helps as it makes you realise over time that the vape is actually a more enjoyable way to inhale nicotene vs the baccy in a spliff. I chose to just stop smoking nicotene only in fags.
7) Feel good about every day you dont smoke a fag and go on vape. Money, health, willpowr etc. Pat yourself on back.
8) Breathing in fruity flavours from makes your breath smell nice.
9) Whiter teeth.
10) Less baccy staining in the house and nicer smelling house.
But most importantly for me.... I was scared to do it, scared to make the decision to say ok im going to give it a go.. So i promised myself that i would do a week out of my life solidly on the vape with max 2 spliffs a night. After that, if i was still craving burning leaves to get my nicotene fix, so be it and i would go back on the fags. But i would do that week at very least, no excuses.
And it worked. In fact 3 days in i was very happy it was so easy and decided then that i just didnt need to smoke fags again. So i get through 10 fags per week in joints of evening, rest is vaping. Better than the 40 per day previously and saving £600 per month by not smoking fags.
Well it would work wouldnt it? As its only possible to be addicted to nicotene, not breathing in burning wood etc.
The fact that i know i can have a spliff in evening with a fag in it helped i think. But as i said, ironically doing that makes you think that vaping is actually nicer than smoking cigs and it is.
I have had a relapse, in a pub, 6 pints in, smoked 3-4, but next day and later that evening, back on vape and not really wanting to have any more fags.
Good luck dude and dont beat yourself up on having a spliff or two each day with baccy in it.
thats me tho id rather chuff baccy than some man made chems in a fukin juice 
Also caused my blood clots in my lungs (formed in the leg and made their way to my lungs, only reason I didn't have a stroke is that the clots were too big to go to the brain 
).
