I love to say to myself in times like this, "Tommorrow at this time, it will all be over."
I have the speech memorized, I've gone over it a few times in front to teachers and other people. My roommate was the best critic, and as a result, I have realized there are many basic words that I have been mispronouncing. He ruthlessly pointed out what sounds really American, or where the accent is up instead of down.