Before Sleeping

Why do I get the surge of everything right before going to bed? 

I get all these crazy ideas for my creative writing yet it’s half past eleven and I need a full night’s sleep..

I get these fancy emotions that creeps ON my skin like some liquid metal..

Also, I get these dubious thoughts about how I should do everything now just to feel accomplished.

Can these things come during the unused time of my life where I shouldn’t be preparing for a night’s sleep?