Being employed by psychos
The teeny, tiny little nursery that I work part time at just "let go" one of their employees. A nursery that only has 8 employees (3 of them are managers) and plays by jr. high school cheerleader politics. ("We don't like Amy anymore, and if you like her... we wont like you either"). The policy of, "you'll have to screw it up to find out how to do it right." Then firing employees who go home without ever understanding what they did wrong.
Makes it hard to remain positive!