Cigarette packs in the UK say "Smoking leads to lung cancer and can cause a slow and painful death".
My cousin sees a pack with that on the box and says " Wow - I ain't smokin those. I'm getting one of my American packs out of the suitcase."
They've had those scary pictures on our cigarette packs for years up here. Probably ten years now. Didn't do much, except add to the stigma of "smoking is for badasses."
If you want to quit, read/watch Allen Carr's Easy Way to Quit Smoking. It worked for me (easy peasy with no feeling of deprivation) and subsequently 6 others I know read the same book and all have quit since.