The famous violinist Nathan Milstein wrote: “Practice as much as you feel you can accomplish with concentration. Once when I became concerned because others around me practiced all day long, I asked [my mentor] Professor Auer how many hours I should practice, and he said, ‘It really doesn’t matter how long. If you practice with your fingers, no amount is enough. If you practice with your head, two hours is plenty.’”
“How much” you do is almost never as important as “how well” you do it.
“The definition of insanity is doing the same thing over and over again and expecting different outcomes.” – Einstein
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