go through the mill

US /ɡoʊ θruː ðə mɪl/
UK /ɡoʊ θruː ðə mɪl/
"go through the mill" picture
1.

to experience a difficult or unpleasant period of time, often involving hard work or suffering

:
He really went through the mill during his first year at the company.
After the divorce, she went through the mill emotionally.