Yup!
I do know how difficult it is to stop to some, but personally quitting is not a problem. I just told myself I would quit, and quit.
Cold turkey.
My mom did the same thing much earlier in life.
It's all a matter of being able to control your body and mind, not a difficult task if you have half a brain.
Try it with Coke. Drink two coke's a day for 3 months. Then try and stop. Yes, it is very, very hard. Yes, physically you feel dependant. But yes, mentally all you have to do is not reach out and open a can.