“A pro views her work as craft, not art. Not because she believes art is devoid of a mystical dimension. On the contrary. She understands that all creative endeavor is holy, but she doesn’t dwell on it. She knows if she thinks about that too much, it will paralyze her. So she concentrates on technique. The professional masters how, and leaves what and why to the gods. Like Somerset Maugham she doesn’t wait for inspiration, she acts in anticipation of its apparition. The professional is acutely aware of the intangibles that go into inspiration. Out of respect for them, she lets them work. She grants them their sphere while she concentrates on hers.
The sign of the amateur is overglorification of and preoccupation with the mystery.
The professional shuts up. She doesn’t talk about it. She does her work.”
— The War of Art by Steven Pressfield
Emphasis is mine.