how to get my apartment tidy for christmas

basically, at the moment, my apartment is a dump, it is only a 1 bedroom apartment and small too.....its cluttered full of clothes, footwear....black bags full of clothes strewn about, coffee table in living room is cluttered and a mess....bedroom is full of clothes piled on top of each other...literally no room to swing a cat....

my mother said she wants me to have the place tidy and ship shape for when she visits at christmas....but i have mental issues and get lethargic a lot and find it an effort to tidy up....everywhere is a mess.

got any tips for me or what can i do? my mum will be very upset if its like this when she gets here for xmas.