So on Monday I will start teaching in the ESL as the temporary teacher while the permanent one is on maternity leave. Will this guarantee me a teaching position for next year? I hope so. I also interview for a position on Monday. So I can't sleep lately. I keep having nightmares that I go to the wrong class, forget where I work, and parents are trying to blame me for things.

Just think back and remember you are in control of your life, you are an adult. You probably won't screw up.