What Do I Write?

Just something I usually do when I have writer's block.

I pick up the pen
What do I write?
Words and phrases
Travel at the speed of light.

I start a word
What do I say?
So many thoughts
Clog up my brain.

I say a thought
What do I do?
Different ways to put it
And I have not a clue.

I put down the pen
Have to think it through
I pick up the pen...
...Now what do I do?