Yet more evidence that when your mind is getting as cluttered as your desk, it's time to change tack. Putting pen to paper without any intention is proving again and again to be fruitful.
Wandering Minds Rediscover the Good Stuff
So maintaining the momentum with regards to letting the mind wander seems to be working. This reaction to long train journeys and days dedicated to the tax return is a positive one. Ideas I'd forgotten about are bubbling to the surface.