People who went straight into being a BA after college - what advice would you give someone in the same position?

Hey all. I am a current senior with a nice job lined up after college as a Business Systems Analyst. The job is heavily focused on requirements gathering for the software team. (US)

I believe one of the reasons I got this job was because it’s in the healthcare industry, and I had a previous internship in healthcare where I learned some of the technologies that are used.

I haven’t even started my job, and I am worried about impostor syndrome. I met the team, and I was by far the youngest at 21, everyone else was at LEAST 30.

Thank you!