Without knowing exactly what the issues are that are making it NOT stick...
What's the mg/ ml of your liquid? Its possible there's not enough "punch to it to curb the cravings...
What flavors are you using? Its possible they aren't really your cup of vape. Many smokers thing that switching to a "baccy" juice will make the transition easier, because they think tis going to be just like smoking a cig... its not. For the most part, from my very unscientific observations, I see way more successful converts that try something completely different from a tobacco/ menthol... I was one of them. Cinnamon did it for me, for example.
Are you trying a "cold turkey" approach? (going from no cigs at all to 100% vape?) This amy not be the right method or mindset for you... maybe look to vape more, and not pay attention to the cigs you're smoking, but the one's you AREN'T smoking as a result of the vaping. Not everyone can do the cold turkey swap. Main thing is to not beat yourself up over it if you have a cig...
Keep your Vape gear closer at hand than the cigs... it makes it easier to just grab the PV and take a rip than to get up, and grab a cig.
Hope some of these suggestions help, but don't give up...for some people its not an easy road no matter what they're using. But it IS worth it.