She explains that courage in creativity is something it's best to assume we don't have complete control over: something that runs away, and at a moment's notice can wash over you as a great wave of momentary genius. The delusion she establishes is useful for anyone familiar with such mental brick walls. The talk is more refined than "blame spirits for your failures"; she is simply saying we must graft, work, sweat, and hope that muse/genius treats us fairly. Watch:
David Pogue appreciates the TED conference's elitist reputation but notes: "Truly, these videos are gems of the Internet; I know a lot of people who watch one each morning as they sit down at work to get inspired for the day." Most everything I've heard about creativity is a zoetrope to Elizabeth Gilbert's high-definition 3D surround sound. It's all illusions and spirits, but who cares? This is about confidence, her determination is infectious.
Eminem, however, has no such problems.