If you are trying to quit smoking, you shouldn't reward yourself because that will trigger your desire for gratification.
Rewarding yourself every few days provides reinforcement for spending a period of time smoke-free. It is a positive way to motivate and support your effort to quit.

Question

Quizplus · Accepted Answer

Rewarding yourself for not smoking can serve as positive reinforcement, making it easier to stick to your goal by acknowledging and celebrating your progress.

If You Are Trying to Quit Smoking, You Shouldn't Reward