history: I went to a job interview felling very confident and cocky. But I got the job anyhow because I had the right skills. Unlike many of my friends I was confident when I went to job interviews and I always got the job. I guess I was lucky.
current: I think if you're confident in yourself, you can talk yourself into most jobs. You should give yourself more credit and not say you were lucky! 
next: I guess you're right and I appreciate the way you look at this. I did have the right qualifications, so maybe that boosted my confidence.