I quit smoking while I was taking NLP training. I had a few things going for me at the time.
Some of mine were:
Other factors I believe contributed to quitting successfully:
I was a volunteer fireman and got stuck in a couple of fires. I developed claustrophobia. The idea of suffocating to death didn’t appeal to me and since long term chronic smoking will guarantee emphysema 100% of the time smoking lost its appeal.
I was very athletic playing European handball 5 days a week, was a triathlete, and competed in world police games.
Luck plays a big part in it. After 26 years of smoking quitting needs to take precedence over EVERYTHING else for at least 3 months. It takes a year to overcome the effects of withdrawal so you need a window of low stress in your life. Quitting during a period of high stress will guarantee failure. Is this a time in your friend’s life were they are confidently managing home and work? If not wait until they are settled.
Every time I fell off the wagon I would kick myself until I got back on.
Exercise throughout my adult life saved me. Despite years of self abuse not only with cigarettes but food and alcohol as well, I have clear arteries and n emphysema so to me the key ingredient for recovery is activity and goals for that activity such as a triathlon. Team sports or games such as bridge will fulfill the need for social interaction without the alcohol which breaks down the resolve.
Start on a Saturday morning and plan to do nothing all weekend even if others are whining for attention.