What are the ways to overcome fear of interview?
Three factors: knowledge; preparation; and visualisation.
For knowledge- study the book "What Color Is Your Parachute" which is a job-hunting bible and it has great advice on interviews.
For preparation: study the available information on the internet about the organisation who will be interviewing you. Know yourself: your strengths (illustrate with short stories) and your weaknesses (tell how you compensate for those). Of course, have a resume tailored to the position you are interviewing for. But tell the truth on your resume and in the interview.
For visualisation: google how sportspeople use this technique. In your mind's eye visualise yourself performing brilliantly in the interview and being offered the job. Repeat this as often as you can before the interview.