do some self-hypnosis.
Look in to the mirror, concentrate, look into your own eyes in the
mirror, tell yourself how important is your studies.(in the first
place, you must really think that it's important).
And then try to take away things that will probably distract you,
like take away all the recent magazines you bought, shut down your
PC, make it like the only thing you can do is to read the books,
you cant do anything else.