Finding that juice that still hits ya when you're lit up is hard. I use a plain menthol juice that smells somewhere between light machine oil and pure menthol. It is STRONG. The menthol burns the whole way down. Finding the right juice is CRUCIAL to keeping people actually off cigarettes. Some people need to replicate multiple characteristics of smoking - and not just a nicotine substitution. This is clear, as other methods of smoking cessation also fail because of this.
If your kit is bunk, you're not giving yourself the proper opportunity to knock that last day out. Find a juice JUST for when you're loaded. And if you are getting crappy dry hits, fix your gear. Vaping good juices, through optimum gear / set up - is SO good, a cigarette is the last thing on your mind. And it's hard to not want to do it all day.
You need to find that, and you will be fine. Until then. *shrug* and so what? You stopped smoking 6 days a week. Now perfect your art of vaping until that last day is gone too. Get there when you get there.