Another tip, always remember the first time you tried to play a clarinet, cello or violin (if you can). Those for me were special moments.
Here's some other (comprehensive) books about practicing, which go from mechanical prescriptions about washing hands and brushing teeth beforehand, to the zen, in the vein of the motorcycle and archery books, like long tones/long bows/drone notes/son filé (the last is Galamian's term, his violin technique book highly recommended).
Kenny Werner, http://www.amazon.com/Effortless-Mastery-Liberating-Master-M... (recommends pianists practice long tones ?!)
Bruser: http://artofpracticing.com/book/ (Gerald Klickstein' book is also good, i remember)
Julie Lieberman has soem good violin-specific eg http://www.halleonard.com/product/viewproduct.do?itemid=6954...
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