Essays / Preliminary Literature Review on graduate employment prospects; mental block [3]

Hi guys,

I've been asked to write a preliminary literature review on graduate employment prospects but have had a complete mental block on how to approach this. What sort of 'objectives' should I be setting and should I focus specifically on journal articles related to graduate employment or more generally on the meaning of employability?

I'm really stuck and don't know where to start; this is my first attempt at writing a literature review.

Thanks,

Cameron