Before the interview, re-read:
- the job description/advert
- your application
- your cover letter
- your resume
- your selection criteria responses
If you are not confident or do not have much experience of interview try to practice with a friend or family member.
It's not easy to role play in this way and it can be embarrassing, but it can help.
Treat this as a practice and not a rehearsal – don’t try to memorise answers, instead use this exercise to get you thinking.