NWR: Stressed...please help me feel better **with 2nd update**

Maybe it's my lack of confidence, or maybe it's just my nerves kicking in. I have an interview tomorrow morning at 11:30 am for what is my dream teaching job at the school district i love subbing in! It is only a 12 minute interview and based on a talk i had with someone i cant mention, there is a good chance it's mine (story is too long). I know i work super hard and give everything i do 100% i just know i get nervous and dont express myself very well in interviews. Now here comes my lack of confidence. I'm so sure im going to let myself and everyone pulling for me down by screwing up in the interview and not getting the job. I just wish i could go with a positive attitude....please help. and pray.

UPDATE: Just got back from the interview and it went better than i could have expected!!! If i don't get the job i won't be disappointed because i now know i did everything i could and i couldnt have answered the questions any better than i did so if i don't get the job it is because i have less experience than someone else and there is nothing i could do about that at this point.

UPDATE #2: I HAVE A 2nd INTERVIEW ON TUESDAY!!!! O M G!!!!!!!!!!!!!!!!!!! Im a cross of all of these emotions right now...