It's amazing the rut (or as one prof. put it, "ritual") we get into. That is one reason I went to "jailhouse roll-yer-owns," so that I would have to make a conscious decision for every smoke. It is too easy to pop one of the "tailor mades" out of the pack and into the mouth and light up without ever thinking about it.
At least you caught yourself, Alex. That's a good first step. Good for you. Keep trying, even if you goof. I still want one every day, but it seems like a residual memory at this point. Something tells me, (OK, past experience) that if I were to light up right now I would gag and think "what the hell did I ever see in this to do it for so long?"