I smoked 2-3 packs a day for 30+ years.
I Quit cold turkey 12/31/03 @ 23:59 . I put my remaining 1/2 pack of Kool Milds in my desk drawer.
I have not touched that pack or any other cigarette since that exact second. Pretty cool.
I don’t caugh too much anymore, food tastes better and the World smells real, not smokey.