Good days for insights have nothing to do with stunning breakthroughs or grand victories. The key turns out to be having small wins — minor innovations and troubling problems solved — on concrete steps toward a larger goal. Creative insights flow best when people have clear goals but also freedom in how they reach them.
From "Focus - The hidden driver of excellence", by Daniel Goleman, 2013. I have changed the tense of the quoted text from the past ('Good days for insights had nothing') to the present, as it reads better, in my opinion.