Smoked for about 15 years, tried a few times to stop, never worked. Made myself a promise to stop once I get a dog. Got a dog and stopped smoking with no problem.
Possible contributing factors:
When it was time to stop I was already pretty disgusted by smoking. I just needed a last push.
My mind was in a more positive state after I had a deep depression for a few years. I was also more conscious about my health because of that (see previous point)
My friend group and work place used to be full of smokers and somehow that changed over time, so I was often alone with my addiction
Smoked for about 15 years, tried a few times to stop, never worked. Made myself a promise to stop once I get a dog. Got a dog and stopped smoking with no problem.
Possible contributing factors: