When Rafe Poirrier smoked cigarettes, he smoked as soon as he woke, after eating, while driving, and whenever he took a break at work. "I think my favorite (part) was socializing—hanging out with smokers outside an office building, [...]

Physical cravings, combined with environmental, behavioral and personal triggers like those Poirrier experienced, can make quitting very difficult. In fact, a 2009 study showed that simply viewing an image of a person smoking can trigger someone who has recently quit to abandon their newfound resolve.