Plan for the interview in advance. Go over in your mind all the various questions that are likely to be asked. Think about the answers you are going to give. Then “rehearse” the interview in your mind. Even if none of the questions you have rehearsed come up, the rehearsal practice will still work wonders. It gives you confidence. And even though real life has no set lines to be recited like a stage play, rehearsal practice will help you to ad-lib and react spontaneously to whatever situation you find yourself in, because you have practiced reacting spontaneously.