If there is a devil in this world - its name is nicotine.
I smoked cigarettes in high school - couldn't get enough of them, always more, then more, then more. Quit cold turkey.
Picked up a cigar in my 30's - didn't inhale, what's the big deal right - bang. Full blown addiction.
Quit cigars cold turkey... then a fishing trip would come along, meh, have a cigar -what could go wrong... bang.
Quit using nicotine gum... what could go wrong... can't stop the gum.
Rinse and repeat, over and over and over.
That substance has it's hooks in me - and did from day one.