NERVOUS

I'm really starting to get scared. My book talk is tomorrow. Going up in front of all those people. It's scary. I have huge stage fright and I can't talk properly when there's like even 10 people watching me let alone 30. I'm really starting to worry for all the projects I have. Not the doing but the performing. I can't be myself and my heart beats like a drum. Sometimes if I perform recorder for testing, you could hear like thumps in the notes. I really am quite annoyed with the lack of courage I have. Someone help me. Please.