I agree with Bman 100%
Congratulations on your tough mindset, but you need to get creative and hit this quit from a different angle. Hell, I screwed up and ended up putting a Heavy Bag in my spare bedroom and I have to carry a note in my pocket every day, but....it works and its something drastically different than what I was doing before.
Change it up, keep your determined attitude, but do some totally different quit practices than you have before. It will also help to tell your subconscious, that this is different and THIS is the one!
I would say 'Good Luck', but that would infer there's a possibility of you not making it and that's not an option this time.
Stay Strong and 'Good Quit'!