Get an iPhone.
Or a notepad. Or index cards (that’s what Anne Lamott recommends).
Whatever your preferred method of documentation, make sure you keep it on hand at all times – Yes, even in the bathroom – so that you can write down inspiration when it comes.
Nothing is more frustrating than finally figuring out that fabulous plot twist only to forget it before you get a chance to sit down and write.
My problem? I get really great ideas in the shower.