Keep a notebook where you write down your ideas, inspirations and wishes. Keep reading your old notes and improve upon them.
If something stays on the list for long enough, start working on it: you probably have given it enough thought now and it clearly seems worth it.
@fribbledomI've got the habit of writing but never revisiting. How often do you read your old notes?
It depends, but I'd say every other day, or when I'm working on specific projects.
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