Theres a reasoning for everything. I agree with Linda, find someone you can practice with. Do some breathing exercises before meeting people and dont be so hard on yourself. Go in with the mindset that "you got this far, you can do it, and youre worth it" the worst possible thing they can do is say no, but at least you tried. Staying positive and open shows as well as being timid and nervous but most employers understand this. Those are the people you want to work for anyways. The fact you even had a resume in the first place, shows alot more professionalism and preparedness than just simply going in and filling in the blanks on an application. Its more personal, but be sure to be in detail of every experience and knowledge that you have that will set you apart from those that are unprepared. The right opportunity will present itself but beating yourself up about it, wont get your foot in the door. You can do it!