Hello ranniks,
I have read your post and I know what you are feeling.
The Pianist has also motivate me with the piano. Also I remember that when that scene of the Ballad was passing and finished, my father came thinking that I played it.

I didn't pay attention to play it at that moment, but I became focused in the Nocturne, and I wanted it to became a special piece for me, a piece which I can play during my life.
After the movie, I started to want to play more seriously, which made me think gradually on entering to a music school and improve my technique and my playing.
It has been difficult, but I have detected my faults and I wanted to improve them.
I agree with the people who posted that the Ballad is very difficult, because as someone said in the post, it requires patience and also one has to open his/her mind to other pieces of other composers.
I once tried to learn the Fantasie Impromptu, and I though that I got it right once I memorized it, but a teacher of the conservatoire rejected my play and in the forum they told me that I needed more flowing, more speed, more everything (although someone told me that the second part was fairly well).
That has made me think in learning other stuff in order to improve my technique. I wanted to enter to a music school, but I was rejected. However, that hasn't discourage me to continue playing.
Patience and constance are the key to do it.