"I have worked a great deal in my life, but have always found that toolarge an amount of purely technico-musical work fatigued me and reactedunfavorably on my imagination. As a rule I only practice enough to keepmy fingers in trim; the nervous strain is such that doing more is out ofthe question. And for a concert-violinist when on tour, playing everyday, the technical question is not absorbing. Far more important is itfor him to keep himself mentally and physically fresh and in the rightmood for his work. For myself I have to enjoy whatever I play or Icannot play it. And it has often done me more good to dip my finger-tipsin hot water for a few seconds before stepping out on the platform thanto spend a couple of hours practicing. .
He laughed when I put forward the theory that he worked many hours a day, perhaps as many as six or eight? "No," he said, "I do not think I could ever have made any progress if I had practiced six hours a day. In the first place I have never believed in practicing too much--it is just as bad as practicing too little! And then there are so many other things I like to do. I am fond of reading and I like sport: tennis, golf, bicycle riding, boating, swimming, etc. Often when I am supposed to be practicing hard I am out with my camera, taking pictures; for I have become what is known as a 'camera fiend.' And just now I have a new car, which I have learned to drive, and which takes up a good deal of my time. I have never believed in grinding. In fact I think that if one has to work very hard to get his piece, it will show in the execution. To interpret music properly, it is necessary to eliminate mechanical difficulty; the audience should not feel the struggle of the artist with what are considered hard passages. I hardly ever practice more than three hours a day on an average, and besides, I keep my Sunday when I do not play at all, and sometimes I make an extra holiday. As to six or seven hours a day, I would not have been able to stand it at all."
Wasn't it Rubinstein who said that if he missed a day, he noticed; if he missed two days, his family noticed -- and if he missed three the whole world knew?
This is a common mindset for super-efficient and self-critical people! I very much doubt it is the truth, just Rubinstein (despite his greatness) being a little bit insecure. I really doubt that any harm can come from not a practicing an entire week or a summer vacation lol. Us pianists are so neurotic
Even God rested on the 7th day, right?