There are a million ways that things can go wrong during a job interview. Fortunately, you can avoid almost all of them with a little planning and practice. Most of us know not to wear a Megadeth T-shirt when meeting with a potential employer, for example. Or to do everything in our power to show up on time. But some people evidently still set traps for themselves, unwittingly removing themselves from contention with a single (or sometimes several) misguided move.
Roughly 90% of job interview preparation is common sense, though. You should be anticipating tough interview questions, and shaping your answers. You should also be preparing some questions of your own. In addition to that, you should have an idea as to what you’re going to wear, be mindful of your body language, and know a bit about the position you’re applying for. The key is to make it obvious that you’re the solution to an employer’s problem, and that they won’t find anyone better.
Even if you are, without a doubt, the most highly qualified candidate, you can see a potential offer go up in smoke by making avoidable mistakes.