If you're not failing every now and again, it's a sign you're not doing anything very innovative.
Many of us don't realize that innovation requires a lot of mistrials, errors, and failure. Without failure a lot of the tools we use in our everyday lives would not be in existence today. Thomas Edison an inventor who brought us some of today's biggest inventions including the light bulb, failed a few times. One of Edison's biggest failures was with his use of concrete. Trying to make concrete popular, Edison did things like used it to make pianos and other objects that we would never use concrete for today, and then later gave up on using concrete on everyday items. Edison still produced many successful inventions after this failure.