Well that's what I'm having now.
I have these things, and those things, running around like crazy in my mind.
No matter how I tell them to stop running, they just won't listen.
Just as much as you tell yourself to stop thinking about something, that's when your mind decided "Hey, let's talk about this".
And there you are, lying on your bed.
Forcing yourself to fall asleep.
But the fact is, you can't.
Because your mind won't stop working.
And how can a body fall asleep when the mind won't switch off?
Then you wake up.
You just can't force yourself to sleep anymore.