Knowing how to sell yourself is the key to successful interviewing. Understanding the psychology of interviewing and knowing what is motivating your interviewer will play a major role in selling yourself more effectively. Building credibility and projecting a winning personality are the first steps.
The Ultimate Question
The ultimate question in any interview is “Why should I hire you?” No matter what questions are asked (“What are your strengths?” “Do you work well as part of a team?” or “Can you supervise people well?”), they are all ultimately asking “Why should I hire you?” Every time you say something, it is to give the interviewer more reasons to hire you, adding so much weight to your side of the scale that there is no question who should get the job.