Of course, once in a while, someone will come up with a breakthrough idea that is a bolt from the blue. But normally good ideas come about from being developed, knocked about and refined until they are great.
Fail fast but also fail wholeheartedly.
Online tools that block users from looking at certain websites or limit their internet access are become all the rage among writers. Zadie Smith is among them: in the acknowledgements for her latest novel she thanks two apps, Freedom and Self Control, for “creating the time” in which to write.