Teacher terror

I feel as if I'm hurtling out of an airplane head first and am unsure whether I have a parachute in my pack. I start teaching tomorrow at ELS and have been wracked by fear for the last three days. Will my students throw rotten food at me? Will I be faced by insolent faces in strong defiance of learning? The uncertainty is killing me. I'm aware that I'll most probably encounter charming young Vietnamese students eager to learn more about me and my language and that everything will be fine. But for right now, the teacher terror has taken hold...