There will be plenty of other opportunities. It helped me to change my perceptions of interviews. Previously I viewed them as a nerve wrecking, scary situation where I was convinced I would stutter my ass off. Now, I have accepted that I will stutter and it doesn't bother me as much whenever I do. I also disclose to the interviewers that I stutter and that is not a reflection of my work performance. As a result my speech has improved during interviews, and even when I do stutter it doesn't bother me anymore. Good luck on your future interviews.