Preparing for my first interview in 12 months after 12 years as a software tester

It has been 12 months since my last interview and I feel rusty. I have practised answers but they sound stiff. 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.