If having to run outside the hospital to smoke while your parent or sibling, close relative or partner is dying of emphysema or lung cancer doesn't scare you smokeless, what do you think is going to do it? We are watching them waste away and not even making the connection that it could be us.
We've known of the severe illnesses caused by smoking since the 1970's and yet, we all smoked until we didn't.
You don't have to be scared to quit.
Quitting is not a scary thing. Quitting is simply doing things without smoking until the consideration of smoking actually goes away. And it does.
....that is if you don't keep throwing the idea of smoking in your own face with your bad self talk. :-)
Oh and if your doctor orders you to quit smoking you can still be agreeable.