I can't even begin to tell you how much I agree with everything you said. I make sooo many mistakes at work and my boss is a ***** and yells at me and makes me feel like an idiot every. single. day. because of it. I make mistakes that I have made over and over before. I work my *** of trying to do a good job, and I get everything done I was told to do but I make one or two mistakes and that's all that matters. It doesn't matter that I did a great job on everything else and did it in the time frame she gave me, all that matters is that one mistake. One time she told me "you can only do what you can do" which to me translated to mean "you're obviously not capable of doing the job that everyone else can do, so don't worry about it."
I work in a fast food restaurant, and am expected to work fast, and be able to multitask. I am expected to take orders, and also pay attention to when the orders come up and pass the out. I can't do that half the time. Yesterday I was dealing with a particularly difficult customer and my manager came out, angry that an order was ready and waiting for me to pass it out and I should have looked back and checked to see if it was up. But I was so distracted with the customer, I can only give my full attention to one thing at a time. If I divide my attention, I get flustered, and make even more mistakes.
I really hate my job and I feel like I will never have a job I am capable of doing. I will always be the one who can't do my job properly and looks like an idiot every single day.