Preparing for my first interview in 4 months - 4 months and counting

I get tongue-tied when I am asked about my weaknesses. Thank you in advance. I want to come across as confident and honest. 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.