How can i get my dad to quit smoking?

Caring Conversation : The truth is we can’t make people to change their behavior. If we tell people what to do, they often get resistant and push away. Start with a caring conversation. Avoid lectures, and threats. Talk about your own fears and why this matters. Ask q's like....Do you think about quitting? I care about you, how can i help, so you don't have to tackle this alone?

See pcproat: Has programs to help, - get literature from lung ; cardiac associations- get him to know how many important organs are affected by smoking'--ie stomach, prostate, throat, blood vessels etc.