Here's a great quote from a book, "The Magicians" by Lev Grossman.
"You cannot study magic. You can not learn it. You must ingest it. Digest it. You must merge with it. And it with you.
When a Magician casts a spell, he does not first mentally review the Major, Minor Tertiary, and Quaternary Circumstances. He does not search his soul to determine the phase of the moon and the nearest body of water, and the last time he wiped his ass. When he wishes to cast a spell he simply ...
... I am so sorry to do this to you, but this post has been moved to my new website, Widdershins, and can be found in its entirety here: You Cannot Study Magic