How do you quit the cancer sticks? Simple. You quit. I did it, cold turkey, over twenty years ago, and didn't even finish the half-pack I still had on me. If you cannot, you either are not yet ready to do so, or are not yet able to confront and subdue your addiction. If the former, just wait . . . it will happen, or not. If the latter, and if you truly wish to quit, then, no offense intended, man up and do so. No advise can aid you in this, and all responsibility rests upon you alone.
My cigarette habit was built up over a period of time roughly as long as your young life has been, and as I assume you didn't start smoking in the cradle you have a shorter history of addiction than did I when I kicked the curse. That does not mean it should be easier for you, but it does mean your problem is not insurmountable. So i repeat: You want to quit? Then quit.
Good luck.