To offer a specific interpretation of the play. the goal of an analysis is not to summarize but provide a deeper meaning from a text.
Answer:
it's when you motivate yourself negatively. Or just a punishisment based boosting method to make you stop doing a certain thing. (Smoking, drugs, etc.)
Nick calls Tom and Daisy “careless people” because he recognizes them as selfish, insensitive individuals who take advantage of people and retreat back into their money without accepting responsibility for their actions. After spending time with the Buchanans, Nick is appalled by their lifestyle and reckless decisions.