Interview nerves, what actually helps? - 2 weeks in

It has been 4 months since my last interview and I feel rusty. I worked as an accounts payable clerk before 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.

Arrive early, drink water and take a slow breath before you walk in. It sounds simple but it helps.