It's over 4 years since I last had a cigarette, and I'm so glad I managed to stop! I was helped by e-cigs, definitely, but more than that I was helped by the fact that all my teeth started falling out due to gum disease exacerbated by the smoking (since I stopped, I no longer have gum disease).
Because I don't want to wear dentures, I'm spending a fortune on implants, but because my bone has receded so much (due to the gum disease) there isn't always enough bone to get an implant into.
I had to have the nerve in my lower jaw repositioned in order to get implants in a little over 4 years ago, and it left my chin numb. I had originally told myself no booze or fags for 2 weeks to allow it to heal, but was so scared by the numbness that I decided to do 6 months, as research told me that it should have healed by then.
I kept telling myself I would smoke again after 6 months, but by then I didn't want to - and I haven't wanted to since. To be fair, I didn't drink during those 6 months either as to me, booze and faggage went together like a horse and carriage. I stopped drinking coffee as well, as it only made me want to smoke; tea doesn't seem to though.
So, stick with the e-cigs, and maybe try telling yourself you'll just do it till Easter and if you want one at Easter you can. I bet by Easter you won't want to any more!
Good luck.