['i started a new job last month, and i was so anxious about starting  it', 'Oh, no yeah starting new things can get me all anxious as well. What were you most worried about?', "i'm not even sure. i think i was just concerned about the novelty and uncertainty of it all."]
Yeah, I understand what you mean. I hope that they provided you with some training on the first day to help you get used to the new environment and have an idea of what to expect at the workplace.
i was anxious about starting a new job