Haha. I work at a deli and I think it's extremely rude when customers are on their phones when they're at the counter. Sometimes I ignore them and wait on someone else in line. It's like they have their damn phone glued to their ear.(I won't greet people who are on their cell phones or customers who are rude).
Do you go to therapy? I had my first session with a counselor a week ago and he taught me to do those deep breathing exercises when I feel anxious. It seems to help, but I haven't been practicing long enough to really notice a big difference.