Where do ideas come from?

Do you ever find yourself writing something which you never realised that you thought?

I’ve just had a really productive 16 or 17 hours (admittedly with a night’s sleep in between) where not only have I upped my word count considerably, but new ideas came to the fore. Suddenly parts which were unclear and slightly unfocused, are now structured and peppered with new and fresh insights (or a least I think so).

If only every day could be like that…