I can’t stop thinking about my 1st day.

I can’t stop thinking about my 1st day. Today was my first day of training as a crisis counselor, and I can’t stop replaying the words I messed up on. We had to introduce ourselves and participate in group discussions, and I felt like I stumbled a lot. I kept thinking that everyone in the group was judging me. But then, to my surprise, someone said they agreed with what I shared. That made me feel good like I was understood despite being so hard on myself. On Thursday, we’ll be doing role-playing, and I’m feeling a bit nervous about messing up again. Do you have any uplifting advice?