I came across this quote today:
"Write while the heat is in you. The writer who postpones the recording of his thoughts uses an iron which has cooled to burn a hole with. He cannot inflame the minds of his audience."
~ Henry David Thoreau
It's true - writing is fast and easy when the thoughts are hot.
Too often for me I get ideas in the most inopportune moments.
The trick is setting aside the time for the ideas to heat-up while I'm AT THE KEYBOARD.