Like so many other people, I have a habit of automatically saying “No problem” when someone asks me for a favor. But during a one-day management course I attended a few month ago, the instructor told the attendees to break this habit. She said the response of “No problem” is negative, and implies you assume all requests are problems unless proven otherwise. Or something like that. Anyway, she went on for a good five minutes of why we need to banish the “No problem” response.