When you're looking for a new job, the interview is for most the most nerve-wracking part of the whole process. There is an element of fear, which can make you nervous with the result being poor performance during the interview. Doing well in a job interview depends largely on being well prepared and in a good frame of mind. The job interview is the number one thing on which employers judge prospective employees; gauging whether or not the prospective hire would be capable of the duties entailed by the position. During the interview, the employer will try to get a sense of how you think and how this might apply to the position in question. This is why preparation is key - if you show up for an interview with no idea how to deal with the demands of the job you are trying to land, then it will be no surprise if you fail to do well in the interview.