Interview nerves, what actually helps?

It has been 14 months since my last interview and I feel rusty. I worked as a mechanic before this. The role is similar to my old job as a mechanic. What calms you down?

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

Prepare three stories with a clear beginning, action and result, and adapt them to the questions.