The nagging instructor.
that part where i crashed into a field of cows and the instructor had to go home and change his pants because he sharted
But - it was all so simple?
to keep on one side of the road
The limited patience of your instructor, and passing the damned road test.
Developing confidence. Its easy to become too accustomed to being "taught" how to drive. It gets to the point where you find yourself wanting someone to always tell you what to do next. Getting to a place where you just do things and its second nature without the need for reassurance is huge.
guessing what other road users are going to do next