What is the most efficient way to improve piano technique?

Q. Ahh, just to elaborate. I practice, a lot, but I'm not sure if I'm practicing in a way that would help me improve the fastest.

Right now my approach is to learn up various difficult pieces, but I'm progressing painfully slowly.
Left: Jamming with tunes I know off the top of my head is absolutely no problem for me, because I have perfect pitch. However, I find myself getting constantly stuck because my left hand simply cannot keep up- I struggle to find the chords on my left, but my right hand can effortlessly pull off running passages of notes. How would you suggest I practice to get rid of this problem?
Tehran: Yes, that's the way I learn up difficult pieces. But my problem is, outside of playing these pieces and set notes, my technique is near abysmal.

When I say piano technique, I don't mean something like being able to play a set sequence of notes you learnt by setting them into the proverbial stone of your mind. I mean it as the ability to spontaneously create or being able to be a perfect sight reader without prior practice of the said piece. The former is muscle memory, while the latter is simply better core technique. And I'm asking, what's the most efficient way to improve this core technique?

A. Well, as the top poster suggested...practice...practice,...practice. One other think. If you really want to evolve and open your mind. Jam with your favorite music and try different approach as to Modes and soloing.

I practiced hours by copying guitar solos and following other guitarists work. Eventually. I developed a ver good ear, and a perfect sense of timing. Today, I teach :))

I do play piano and there again, I love to improve / It is easier on the piano because you can chord with your left hand and do counter-melodies with the right.

Edit....if your left hand doesn't keep up, then you are lacking in modal trechnique. Do you know your scales in all modes ?
I suspect that is lacking. And to jam with music you already know ispointless. Jam with music you never heard and then, apply different modes and these same modes have to have the correct chords to match.

Here is a good link that may help you in the left hand. I use this chart when I let my students play and I supply the chording. At least, I can hear and see what they are doing wrong.

http://www.apassion4jazz.net/jazz-chords-scales.html

This is related to jazz but will help you immensely in supplying you different scales to apply against your chording.
It would be fun if you had another pianist chording so you could exchange ideas. Or even, recording your left hand and on the playback, apply different modes with the right. Just a thought...

Enjoy.

Original Question

Title : What is the most efficient way to improve piano technique?
Description : Q. Ahh, just to elaborate. I practice, a lot, but I'm not sure if I'm practicing in a way that would help me improve the fastest. R...