The best way to get over your anxiety is being prepared. Spend as much time as you can to get ready for the interview both in researching the company and preparing answers to common interview questions.
If you find that you are still nervous about job interview, than we suggest rehearsing under less than ideal circumstances. Our suggestions are as follows:
Loud Music Strategy
Play some music you don’t like loud enough that it interferes with your thoughts but doesn’t wake the neighbors. Then rehearse your answers to common job interview questions. Don’t try to talk over the music just deal with it. Practicing for your interview under less than ideal circumstances will help you do better.
Insulting Friend Strategy
Ask your friends to help you rehearse for you job interview. Tell them they can say anything mean or insulting they want to say to you (within reason), while they ask you common job interview questions. You cannot respond to their insults, only respond to the job interview question they are asking you.
The conversation should go something like this:
Friend: “Why are you interested in working for company x? By the way, I think your car is really ugly.”
You: “I really admire company x for reason a, reason b and reason c. [do not respond to car comment]”
Friend: “Your room is always such a mess. You are such a slob. What is your greatest weakness?”
You: “My greatest weakness is my math skills. I overcame this weakness by studying extra hard for my math final exams. [Do not respond to slob comment.]”
Both of these strategies are very childish, which is why they are so effective at getting rid of anxiety. The real job interview will never be as bad as the artificial situation you created when you were practicing for it.