Practice is good, and it is important.  But it is not all that there is to the learning process and acquiring skills.  A person also needs time to spend listening and thinking and letting what they learned from the practice "sink in". 

I know the diagram is humor, but felt it good to remind folks (for the sake of some of the newer people) that practice alone isn't all there is to learning music or an instrument.  Whenever you are listening to music, whether or not it is actually violin music, you are absorbing influences and exposing yourself to ideas that will eventually become part of your sound.  That is important too, so make sure there is some time in every day spent listening and enjoying.