I couldn't tell you the specific books that take each side of the argument, but the two suggestions are this:
- Write down your idea the moment you get it in a little notebook so you don't forget it
- Do the exact opposite, because if you forget it it wasn't a good enough idea in the first place
My suggestion, while maybe not the best one, incorporates both: keep a notebook, but don't write everything down immediately. I have a small hardback notebook that I bought it in work; it fits in my pocket in work, which is perfect when I'm doing menial jobs like packing books away, if I get an idea or see or hear something that may be of use, and fits in any bag I might have with me wherever I go. But I don't just write down anything. I usually wait a day, unless it's something to add to an existing idea, or specific words I want to use, or details for somewhere to submit. If, the next morning, I can remember the idea I had the day before, I will write it down in my notebook.
This is useful for ensuring the bad ideas don't stick around - if you forget them overnight, they weren't that great - and for keeping the good ones - that really shouldn't be forgotten so quickly. Any and all opinions on this method of idea-keeping are appreciated.
Which of the two suggestions do you follow, or are you a half-way kind of person like me?