If you are struggling and still smoking
each time you want a cigarette you mentally lock that thought in and close the circuit. Your addiction already decided you are going to have that cigarette whether you have to kill someone or not.
INSTEAD~~~~Catch yourself in those thoughts and
Leave that circuit open to change.
All you have to do is stop the energy of that thought and that will in turn stop all the things required to initiate the act of smoking and inhale it.
Thats the time to redecide