Junkie thinking is a term commonly used to describe the thought process that leads a person into a smoking relapse. Thinking you could have just one cigarette without getting hooked again would be an example of junkie thinking.
There is No Such Thing as "Just One" cigarette
Nicotine Withdrawal and Junkie Thinking
I can smoke just one cigarette.
Why do others get to smoke and I can't?
I'm so stressed--if I smoke, it will help calm me down.
I can quit again tomorrow.