Hello everyone. I usually worry about a lot of things but today I wanted to focus on job as a cashier. I don't currently have a job and I don't really know exactly where to work but I'm thinking I'm probably going to apply for a cashier job. 
One thing that worries me is the customer interaction because I'm usually not super outgoing and I'm not very good with social situations. 
Also something that may sound a bit strange but I often can get the feeling like a place is louder than it really is and when it does feel loud it overwhelms me.. especially when I have to talk to a customer and make sure they can hear me I think that's stressful too. 
But I'm also really worried about making sure I could know how to do my job right. I know there's training but I worry that I wouldn't be able to retain it or maybe understand or that I'd probably forget how to do everything. And it sounds especially stressful if I forget how to do something properly when its like just me and a customer, I think that would feel very pressuring for me. 
But on the bright side I think a cashier job could be good for possibly getting me out of my comfort zone. I hope this is all something I could maybe get used to but it still worries me much for now. If anyone has any tips maybe like on relaxing myself for this, or how to take it easy, that would help me.