The definition of confidence is: "a feeling of self-assurance arising from one's appreciation of one’s own abilities or qualities". That is exactly the feeling that you want to have when you walk into that high stakes job interview. The conversation that you are about to have is different from any other conversation because it will determine whether or not you are perceived as a credible professional with the special qualities they’re looking for.
How do we acquire the tools we need in order to present as a confident, competent professional? The answer to that question is to take a look at the behaviors that you have in your professional conversations that are keeping you from feeling confident. We all share them so they’ll be easy to recognize:
We may experience a high degree of anxiety that causes any number of negative physical and/or verbal behaviors. We may speak too rapidly or too much rather than being thoughtful in our responses. Anticipating the outcome because we’re nervous and just want it to be over is a sure path to self-sabotage.