The drive to integrate different influences in one's life and take them in a new direction; that's what Chuck Berry and others like him had.
How do we select a "final" version of a work? Do we even need to?
Keep learning, keep trying, keep experimenting
Sometimes we have to forge our own path
"What is a song, exactly? It's something that starts as an idea and becomes more than that."
Patience and a long view will pay off
There is considerable overlap between entrepreneurship and creativity