It's the end of your driving lesson.
Just before you get out of the car, you turn to the driving instructor and ask what you need to do better next lesson, in order to eventually pass your test.
"You need to drive better," is the reply.
"Yes, but what specifically?"
"You just need to drive better."
"How will you be able to tell I'm driving better?"
"Well, you'll be driving better..."
You'd be tearing your hair out, wouldn't you?