Despite being fully aware just how bad smoking is for your health, smokers would rather continue to smoke than to consider stopping. It often seems too hard for them to stop. Even if they are coughing and spluttering every day they convince themselves that there is some benefit. I once met a lady who calmly accepted that her leg needed to be amputated because of Buerger’s disease (caused by smoking) but then got extremely angry when told by her doctors to consider stopping smoking!
Hypnotherapy is an excellent method for helping people to stop smoking, usually in just one session.