I was a 1.5 pack per day smoker for 10 years, until...
I was working for a client who had a gravel voice. Imagine a woman whose voice was so course and abrasive, one could almost visualize the torn and burnt shards of her vocal cards. Her personality was equally abrasive and harsh; she was bitter, depressed, and just downright a wellspring of bad vibes. Her house reeked so foul of stale smoke. Me, as a smoker, I didn't care about the smell of smoke. But her house was so gross, I was nauseous after leaving. As in I wanted to be sick from the stench that was clinging to my clothes, skin, and hair.
After my final day of working for her, I quit. Why? So that in no way, in word, action, or deed, would I ever model myself after her and somehow tempt fate in becoming like her. So that I would never sound like her, act like her, or smell like her.
Now, I quit on the condition that I could smoke whenever I wanted to. Because the idea of never smoking made smoking sound that much more special. So my frame of mind was to smoke if I wanted to, but not to smoke out of an addicted habit.
Seven months later, I am proud to report that I am a non-smoker. I will cheat perhaps 1-2 cigs per month average. But, instead of smoking, I picked up bike riding. So to me, the occasional cigarette is now bad for my riding routine.
Good luck to you.