You'll never sell any product that is as important as yourself, so you want to do it right. Selling yourself--in job interviews, in your performance on the job so you can earn a promotion ,and in working with outsiders so you can make yourself attractive to other companies and thus increase your career progress and your earning power--is your most basic selling job. Almost everybody in business must go through the process at least several times in his or her career. Having been through the same experience myself several times, I have my own four main rules to follow. They have helped me ,and they can help you ,too: Ⅰ. Show your future employers what you can do for them. What do you bring that's unique? To paraphrase President Kennedy: Ask not what your employer can de for you, but what you can do for your employer. Don't tell the person interviewing you what's on your resume(简历) , which they have already read. Tell them instead how you are going to do this job better than anyone else would make them think about how good the boss who hired you will look. In other words, sell your advantages, not your features. You do that by talking about your knowledge and your skills--the experience and contacts you have developed in your field and the abilities you have developed over your career. Ⅱ. Maintain an open attitude. Openness is the quality that is essential in virtually every, kind of social and business talk if you are to be successful. Don't be so businesslike in your behaviour. Communicate your enthusiasm for the job. This is a refreshing characteristic that employers don't always find in job interviews, and the applicant who displays it sometimes will find out later it was the one quality that made a difference. Ⅲ. Be prepared. Go over the key points you want to make about yourself. Even write them down on a yellow pad and review them several times before the interview. And don't duck(躲避) the hard questions, put them down and then figure out how you are going to answer them. If you've changed jobs three times in the past seven years, expect to be asked why. And if you want to go that extra mile, put yourself through a dress rehearsal(彩排) by having someone play the role of your future employer and 'interview' you. That's an extremely effective technique, one that will give you a much better shot at getting that job. Ⅳ. Ask questions. Asking questions is how you learn, and in a job interview you definitely want to learn about the company just as much as the company wants to learn about you. You'll never have a better opportunity to get a feel for your future company or boss. Besides, employers respect someone who displays the initiative (主动) to ask intelligent questions about the company. That shows you possess two of the most persuasive (有说服力的) qualities that we just talked about: you are prepared ,and you care. Having experienced several job interviews, the author has reached the conclusion that you should ______.