I have never smoked but both my parents did.
My mum had hypnotherapy, nothing else had worked.
My bad has technically not given up, he is just seeing how long he can go without one. He's at about 45 years of seeing how long he can go.
I think this is a good approach because it is positive, you are actively doing something and it doesn't matter if you can only go 10 mins, you know you can do 10 mins so try 11 mins, or 12.
Also people don't ask , 'have you had one yet?' they ask, 'How long is it now'
In a previous career I was a clinical physiologist, when you stop smoking your body reacts.
One of things smoking does is paralyse the 'hairs' in your bronchial tubes. These waft particles of smoke, pollution etc out of your lungs.
Over the first two weeks these start to 'wake up' and do their job, the next 2 weeks they are doing a sort of 'spring clean' and trying to get the gunk out of your lungs.
This is when many people start smoking again because, well, you are going to be coughing up black mucus.
This lasts about 2 weeks, the first being the worst.
Then you have another 2 weeks of starting to feel better, after 6 weeks you are a non smoker.
I believe everyone can stop but you have to find the right method for you.