quit cold turkey

단번에 끊다

I was amazed when my husband, who had smoked for 50 years, quit cold turkey in 1994 after one session with a hypnotist and a few sticks of nicotine gum.

Trying to Break Nicotine’s Grip (Published 2008)

Scores of experts on nicotine addiction have come to learn that willpower is rarely enough to enable a smoker to quit.

https://www.nytimes.com/2008/05/20/health/20brod.html#:~:text=I%20was%20amazed%20when%20my%20husband%2C%20who%20had%20smoked%20for%2050%20years%2C%20quit%20cold%20turkey%20in%201994%20after%20one%20session%20with%20a%20hypnotist%20and%20a%20few%20sticks%20of%20nicotine%20gum.%20