No matter what you do, do it without hesitation. Go at it with optimism. Visualize yourself doing everything right and if there is a mishap, recover gracefully. There is no success without “failure”. Failure like anything else is something that happens and what matters is how you frame it. Do you quit at the first failure or do you use it as a stepping stone. What lesson can you learn to avoid that mishap again. Failure is a learning opportunity. The worst thing you can do is tell yourself that you will not fail.