Try to sell a book on Amazon or post an opinion-editorial (op-ed) on LinkedIn Pulse. And the consumer interest or lack of it is quantified. And made public.
On Amazon, if your book remains a laggard, there's nothing you can do except watch it plunge to the 1-million ranking in the lowest level of Amazon hell. The shame is so severe you may never publish another book about applying public nuisance to environmentalism.
The good news is that on LinkedIn Pulse, if your op-ed is one of those "This Dog Don't Hunt," you can delete it. Yes, you can.
Just go to your post, click on "Update" or "Edit." The "Delete" button will pop up. Click it on. Shame all gone. You can try again when you are more inspired.