Fingers

[pianoguy2009]

Hey Guys,
I'm a garde 8 pianist, and I'm finding that the more I practice a fast piece, sometimes my fingers gets out of control, like my fingers would like to play it fast even if my mind want to play it slowly, they would always like play the note faster when I'm trying to slow it down, and for reference, I was practicing bach prelude and fugue in b flat major, and before, it was perfectly fine, but the more I practice, my fingers gets out of contol, and leads to me practicing each hands separately and slowly again as if I just started learning the piece.
Is this normal for pianists  :'(

[themeandvariation]

Use a metronome.

[pianistavt]

That Bach prelude in b-flat from WTC book 1 is easy to get out of control.
As the above poster said, using a metronome should help a lot - can do half beats as well as  whole beats.
Also slow practice, increase tempo gradually.
Also there are effective methods that use pauses - your teacher should know them, be able to explain and demo them.

[lelle]

I think many pianists have had similar troubles at some point in their journey. It will get better as you develop more control. I think it typically happens when you rush to play fast and play a bit faster than you can manage a bit too often. Slow to mid tempo practice with a metronome and/or counting out loud should help.