My dad (born in 1932) and that grew up with all the hype that cigs were normal, nothing bad, encouraged, etc...was a heavy smoker. I use to hear him every morning cough his lungs out it seemed. That was enough to deter me from ever starting to smoke.
I lost him 27 years ago today because of that crap. It just destroyed every part of his cardio system.
Mom suffered COPD from the second hand smoke.
I did have a couple of friends that just went cold turkey stopping. I guess it's willpower or something. But, this would have probably helped them.