[iMore.com]

Far more often than not, the big idea is an abject failure.
When we think about building the future, we rarely stumble across the perfect path to do so on the first try. Often, we grasp at perceived futures ways we expect our world to change and improve but it's very seldom the best way to build our actual future.
This isn't an admonishment to never strive to create the next big thing; nor is it a bleakly worded yet heartfelt kick in the pants encouraging you to reach for the stars.
You should always reach for the stars and always strive to create the next big thing. But if you hope to succeed, your best guides are those who have gone before you and failed.

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