Have you ever noticed that it's exactly when you stop focussing intensely on a frustrating problem and are doing something random - like gardening, or taking a shower, or walking, or you land on your couch with a great 'oomph', or you're washing the dishes - that you suddenly see what you couldn't see all day? Eureka! Insight arrives.
In terms of how your brain works, this is part of its design and the paradox. The harder you focus on something that evades you, the further away your ability to see the solution. That's why brainstorming is powerful. It allows...