How do I calm my nerves and smash my interview tomorrow?

Puppystarfish23

I recently applied for a internal vacancy at my work as a transport clerk. I'm currently just picking and doing unloading and breaking down pallets to be picked in the warehouse at my work.

I went for a interview before as a trainer but my nerves got the best of me and I didn't get the job.

I got emailed today asking if I could come in for a interview tomorrow a hour after my shift. I've practice questions and done some research but it's a lot to take in. I definitely think I can do this job but my self doubt keeps telling I'm too stupid and I'm gonna make a fool of myself again.

I only have today and some time tomorrow to prepare and I'm so nervous. The person whose interviewing me is only a year older than me and my friends have all said he's a really nice guy so that's abit of a relief but I really want to smash this interview and not come off a total idoit by letting my nerves and self doubt get in the way.

Updates
1 y
They cancelled my interview 20 minutes before and when they asked to re-arrange a date it was on all days that I was busy so now they are not emailing me back.

I'm very upset with them and don't really want to work with them now seeing how unprofessional they are. Transport clerks are meant to be organised and they can't even organise an interview ffs. They've ruined my chances and treated me as if I'm the awkward one
How do I calm my nerves and smash my interview tomorrow?
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