I freeze in interviews, tips?, retail manager here

I have an interview on Friday and my stomach is in knots. This is my first time dealing with any of this. I want to come across as confident and honest. What calms you down?

I record myself on my phone and listen back. The second try is always better than the first.

Thanks for writing this out. I went through something close to it 3 months ago, and it got easier once I kept a simple log of every call and form.