I totally know why young kids smoke because I did. I know why Adults smoke because I did. It's a crutch as if the cigarette will take away our anxiety and frustrations. Guess what, they are still there.
Learning what smoking does to the body has turned me away. I quit a year ago. If you knew more about what smoking does to your body would you quit? Like, clogged arteries, black lung, chronic respiratory illnesses that could lead to respiratory failure i.e. not being able to BREATH?
If you smoke, you can quit. You have to put your mind to it.
Yeah, some doctors smoke and that's odd too.

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Star30
Florence Nightingale: It may seem a strange principle to enunciate as the very first requirement in a Hospital that it should do the sick no harm. [1859]