Preparing yourself for any challenge can be stressful. Maybe it is something you’ve never done before, like running a marathon, or giving a speech in front of a group. It may be getting ready for an interview for a great job apportunity. No matter what it is, find confidence. Confidence that you will do your best, no matter what. If you are finding it really hard to feel sure about yourself, I say fake it. Fake it till you make it. Trust in yourself, just be. Confident. :))