I remind myself that I'm more competent than I give myself credit for, and that "I don't know" is a perfectly acceptable answer. As an introvert, I've found tha

I remind myself that I'm more competent than I give myself credit for, and that "I don't know" is a perfectly acceptable answer. As an introvert, I've found that most interviewers don't mind if you take the time to think over a question before answering it, instead of snapping out the first answer that comes to mind. Beyond that, it's just deep breaths. Don't worry, you'll do fine.