 One of the things you should do is that a good rule of thumb is as you walk into the White House, go under that awning in the West Wing, just say to yourself, this might be the last time I'm going to go into this building. And what he meant is you should say to yourself that I might have to say something either to the president or to the president's advisors that would be an inconvenient truth that they may not like to hear, but it would be the truth.