Remember that everyone has bad interviews and you need to see it as a stepping stone, understanding that the lesson to be learned is you now know what not to do next time. This may happen a few times but don’t be discouraged, you will succeed.
I would encourage you to visit our mindset section on the Early Careers Adviser page. You can align your mindset with positive and useful content that may provide you with the mental tool kit to keep you calm and collected for that interview situation.
Good luck in that interview. Remember it’s not the end of the world if this one doesn’t go well. Pick yourself up, dust off and get right back in the game.