history: I have to teach an in-service class at work next week. I am feeling a bit uneasy about doing it. I have to teach an in-service class at work next week. I am feeling a bit uneasy about doing it. OK_comma_  calm down_comma_  take a deep breath and relax 
current: I'm hesitant because I get nervous in front of groups.
next: OK,  now I get it. But you need to rehearse in front of a mirror,  that will help