"How often do you practice, and for how long?
Mastering music is more than learning technical skills. Practicing is about quality, not quantity. Some days I practice for hours; other days it will be just a few minutes. Practicing is not only playing your instrument, either by yourself or rehearsing with others — it also includes imagining yourself practicing. Your brain forms the same neural connections and muscle memory whether you are imagining the task or actually doing it." ~ Yo-Yo Ma