Lack of Imagination

i have no imagination lately ... i really into writing novels now ...
but , i have no good idea that can be used for my novels ...
yesterday i have to stay all night to think some good idea ...

it also same for my drawing activities ... i have no idea what to draw...
my friend ask me to draw an anime character with Halloween theme ,
but now , i don't know what to draw ..

tha cause ?
ah , maybe because i'm having mid-term test not long ago and i'm not drawing any for more than 1 week ... ah , i can't think about anything ...

Lack of Imagination makes me crazy ...
= , =