The human ear will tolerate a perfect interval meaning a 4th, a 5th and an Octave.
The human ear will tolerate no sharpness from a 3rd, a 6th or a 10th.
Your quit will not tolerate a cigarette.
Don't give yourself permission!
Put those thoughts out of your mind quickly.
Stick your head in the freezer and count backwards from 20.
"the permission always comes before the puff."