Doing a Google search with reference to cognitive dissonance, I came upon the following:
“Smoking is often postulated as an example of cognitive dissonance because it is widely accepted that cigarettes can cause lung cancer, yet virtually everyone wants to live a long and healthy life. In terms of the theory, the desire to live a long life is dissonant with the activity of doing something that will most likely shorten one's life. The tension produced by these contradictory ideas can be reduced by quitting smoking, denying the evidence of lung cancer, or justifying one's smoking. For example, smokers could rationalize their behavior by concluding that only a few smokers become ill, that it only happens to very heavy smokers, or that if smoking does not kill them, something else will. While chemical addiction may operate in addition to cognitive dissonance for existing smokers, new smokers may exhibit a simpler case of the latter.
“This case of dissonance could also be interpreted in terms of a threat to the self-concept. The thought, "I am increasing my risk of lung cancer" is dissonant with the self-related belief, "I am a smart, reasonable person who makes good decisions." Because it is often easier to make excuses than it is to change behavior, dissonance theory leads to the conclusion that humans are sometimes rationalizing and not always rational beings.”
“Easier to make excuses than change behavior.” How true is that statement.
The “tension produced by contradictory ideas.” When you stop making excuses to smoke, when you are fully committed to your quit - your dissonance will lessen. In other words, you’re cravings won’t drive you as crazy. Stay sane, y’all!