I'm scared of responsibilities

I'm sorry for disturbing you all but I just want to express my feelings.

So tomorrow I will start my first part time job ever and honestly, I'm scared shitless. I'm not good with responsibilities and commitments, apart from that I also tend to make a lot of mistakes. I know they say mistakes are the stepping stone for your success but mistakes come with advice and reprimands. I don't want to make a mistake, especially not for my first part time job. I don't know if I can keep up with the work there, and honestly I just don't know how to deal with people, coworkers and customers alike. I haven't been interacting with people for a long time and honestly, it scares me to start working here. I hope I will not fuck up my first day at work.