When I was a child, a piano teacher let me play to my heart’s content without worrying about such details as tempo and timing. I’m pretty sure that wasn’t the best approach, which may be why those lessons were short-lived. It wasn’t until adulthood, when I studied vocal music, that I learned to pace myself.
Pacing, whether in music or writing, is one of the methods by which we organize the creative flow. Order prevents these creative expressions from falling flat and helps improve their impact.