“… the act of feeling frustrated is an essential part of the creative process. Before we can find the answer — before we can even know the question — we must be immersed in disappointment, convinced that a solution is beyond our reach. We need to have wrestled with the problem and lost. Because it’s only after we stop searching that an answer may arrive.”

From Jonah Lehrer’s Imagine: How Creativity Works, illustrated by Flash Rosenberg