Say the same thing very softly over and over in a slow pace so your brain won't start thinking about all other stuff. Can be everything example: Dum.... Dum... Dum.... Dum.... Dum.... Ancient technique to fall asleep.
This happens in the morning
My brain: are you going to sleep? Me: yes My brain: no youre not
If i cant sleep i start slowly counting downwards from 1000, never made it under 930