When I go for an interview, I'm interviewing the employer as well. I've gone for interviews, asked my own questions and left thinking "Nope, not for me!"

When I view interviews in that way, it reduces my anxiety of being interviewed. It goes both ways. It has to be a good fit for both me and the employer.

The interviewing process can be stressful but I take it as a learning experience. If I had no clue what to answer for a specific question or think my answer was weak, I think of something better for the next time. There's always the same questions that keep coming back so I focus on those. The others, I answer to the best of my knowledge.

As for the exams, you haven't failed yet. Give it your best shot! You can do this.