odd thing is the only thing I was ever really addicted to was the habituated act itself, and the attendant thought musings. I've smoked 3 or 4 times in life....like 3 or 4 chunks of life, some years, and eventually, each time I had just stopped buying them, and then refused to buy more. smoked em if I had em and smoked em till they were gone, but once they were gone, the hard and fast rule of you cant buy anymore did it decently well.
the big key to breaking a habit....was just telling another buddy of mine this recently as he is trying to quit his own stuff....the big key is recognizing when the old habit energy arises. seize that energy and do something with it - take that old habit energy and establish a new habit energy. each time you perceive the old habit energy beginning to raise, immediately route to your new habit, take all of the arising habit energy and redirect it!
the nature of energy is transformation - so that's why it is doubly tough to kill a habit without having something else take its place, because energy does not like to stagnate.
good luck homey, buy your last pack and then just dont buy no mo'