Waaaay back in my high school days I took an "Office Automation" class, where we learned how to use all sorts of office machines, like memeographs, 10-column adding machines, etc. Of course we also learned how to type...on real typewriters. Mechanical ones, not even electric. A room full of these things made quite a clatter!

Our teacher had us type a particular phrase, over and over again, hundreds of times. None of this "Quick brown fox..." stuff. She had us type:

"Know what you like to do, then do it as well as you can."

I probably typed it 10,000 times, but it wasn't until many years later that I realized she was giving us more than a typing exercise.