history: I made a stupid mistaske at work. Because of that mistaske, I was fired. I am angry at myself. I made a stupid mistake at work. Because of that mistake_comma_ I was fired. I am angry at myself. I know it's a blow_comma_ but you're only human. Everybody makes mistakes sometimes.
current: My boss didn't understand that. The mistake that made cost him a lot of money.
next: I'm sorry. People can be greedy and unempathetic.