I like to do several things before an interview. For me, the best way to minimize the anxiety is to feel prepared. I will research the company a little and try to come up with at least 3 questions I want to ask them. Asking the right questions and gauging their responses lets me feel like I have some control, and it usually reveals possible red flags.

On the drive to the interview, I will put on some of my favorite songs and karaoke that shit. It releases endorphins that helps my confidence and forces me to breath and oxygenate my blood. I tend to in the first few minutes of an interview breath pretty shallow, then when they ask me the first questions I feel out of breath and that makes the anxiety worse. While I am sitting in the lobby waiting, I breath deeply and slowly while going over my questions in my head. That way I am not death spiraling in my head and reinforcing the idea that I have some control in the situation.

That's what I do to handle it.