My oldest sister is a teacher. She made it to headmaster then crumbled under "the pressure" as she says and had a mental breakdown and took 6 months off work.
She is a liberal as they get, self defeating, self loathing too.
The thing is though she may be 60 years old but she never grew up mentally.
Unless she is constantly told she is doing good she crumbles. Any critisism brings a mental breakdown on.
I put it down to the fact she has never left the classroom from school, to college, back to the classroom as a teacher.
At 60 she still has to be told how and what to think. There is no outside of the box, only safety and comfort in it. Or so she thinks.