David Rock in Your Brain At Work has touched upon this fascinating topic.
Arriving at an “insight” is purely a right brain activity to connect the dots as against going through a checklist of items.
Activities that give us peace of mind for e.g. meditation results in activation of right anterior temporal lobe to aid in arriving at an “insight” or an “eureka” moment.
Thus in order to arrive at insight we need to detach ourselves from hustle and bustle for peace of mind.