I've dealt with this during every job search. The simple solution that's helped me is to simply go to as many interviews as I can. You'll always be nervous on

I've dealt with this during every job search. The simple solution that's helped me is to simply go to as many interviews as I can. You'll always be nervous on the first interview. I don't know any way around that. But I've found it hard to not be nervous after having been to 3-5 interviews in 2 weeks. Apply to jobs above and below your current qualifications simply for the practice of interviewing. That way when you interview for a job you're excited about you'll have been in the same situation several times and can focus on the questions asked instead of being nervous. Good luck.