A Writer's Block

I wrote this poem when I had writers block.

I think to write then crumble
Scribble all my lines
Throw paper balls at the can
They would miss and tumble
But never again
 
I think to write and then crumble
Tired as it is
My wrist must struggle
 
This angered pen
No longer bleeds ink
Creativity is not oozed out
Like most people think
 
My poem is not done
Though almost complete
Just two more lines
To stop the beat