Thank you!
All is depend on how many hours do you playing a day, who is your teacher, what books do you read, how old are you, and first of all how talented are you

I like Kyle Landry's opinion: "If you choose pieces you would LOVE to learn that are out of your reach, and you give it your all, I promise it will give back more than practicing boring scales."
At the moment I follow my teacher's method to learn piano playing, but before I started to learn in the conservatoire, I learned lots of thing myself.