Decide what you can spend while at work during the week and put that amount into an envelope , said Dayana Yochim , a personal finance expert with the Motley Fool , the financial advice Web site .
理财咨询网站MotleyFool的个人理财专家DayanaYochim建议,可以计划好一周的正常开销,把这笔钱装进一个信封里。