gosh prada, don't want to turn your post into a big whine, but, depression, anxiety, and public contact are a messy mix. i know, i've worked customer service for most my life with all of the above going on at the same time... at least you have a little foreknowledge that it could be rough. knowing that, maybe you can give yourself a little pep talk (this is gonna suck, i know it, but i gotta do it anyway type thing) or maybe, pep yourself so much that the sucky goes away. one thing i've learned is that most people mirror right back at you whatever you give them, it's just hard getting that required up-ness happening most of the time (at least it was for me)

good luck and hoping the best for you...