Putting myself to a dangerous position

Shit! I didn't do my job properly again. I was careless again. I supposed to check the orders of the option trade what Leslie did last night are the same with the brokeage did. But I have not checked it. What was I doing today? I can't tell. Even when Leslie wanted me to look at the Portfolio and asked me where the mistakes are, I can't find it at once. He said that is not professional. I am not working with my heart, and he asked me why. Then, I froze and I was sweating. I even can't remember how I did the work this morning. I just don't know why I just work like an alien every Monday, such as I can't speak english when I walk in at the first moment. I can't concentrate on my work when something happened during the day. Why can't I concentrate on my job, if someone is talking to me. Is it something wrong with my brain?

LISTEN, SHERMEN. DON'T think too much about other non-sense things except my work. BE CONCENTRATE on the job. DON'T dig the hole for myself and damage all my future.