I smoked for over 10 years.
One day I was standing there with about 3 or 4 friends and we were all smoking cigs.
It was at that point I felt how much damage my lungs had taken over the years of abuse I had given them. I could fully feel how awful the smoking was for me.
It was at that point I realized the only way to quit smoking is by truly wanting it.
I went and bought one of those patch things, the three step kind.
I started with the second step patch for about a week, then realized the only good I was actually getting out of the **** thing was the super lucid dreams.
Threw the patch out and found out just wanting it was enough to help me quit.
1 month after I quit smoking I tried a cig just to check myself. I found it utterly repulsive and couldnt even handle smoking it, I had to put it out.
Havnt had one since.
edit: that was 5 years ago