I often emphasize to my classes the importance of changing up your routine, particularly when you're in a concepting rut. Take a walk. Work somewhere else. Change the music you're listening to. If you've been writing for a while, try solving your problem by drawing.
Today, I came across this TED video that confirms the importance of doodles. Sunni Brown is speaking specifically about doodling in meetings as a way to enhance your focus, but her point about it engaging your brain in a different way is true not just when you're trying to file stuff away, but when you're digging around trying to get stuff out too.
So the next time you're turning an idea every which way, remember to turn your brain every which way as well. And don't forget, if you're a writer and your doodling produces something interesting, please submit it to Illustrated by Copywriters.