škola života

Abbey Academy of Arts is like the university of life; where one learns from life's experience. (Google) 

I learned all I need to know from the university of life, not from books.(thefreedictionary.com)

My journey to america was a real university of life. (Google)

(být v něčem) až po uši, (mít něčeho) po krk

Right now I’m up to my eyes in work.  google

Normally I'm up to my eyes in the kitchen but because I've
been on a diet I really find time hangs heavily on my hands. Google

As it is, I'm up to my eyes in writing,
and it's all piling up to be polished and sent. 2 am.  Google