Unwavering belief in your purpose.
When you believe deeply in what you are doing, what you are creating and what your ideas stand for, you develop the resilience to withstand all rejection and criticism. There is nothing more profoundly necessary for true success then a deep and unwavering belief in your purpose.
There will be all kinds of people who want to shrink your ideas or steal them. Others will want to use you for your idea or simply tell you your idea is worth nothing. Pay attention to who you listen to. Be smart about who you choose to pitch your ideas to. Pay attention to your gut instincts. Protect your ideas and only share them with those whom you respect. Do your research and work with like-minded innovators.
With deep belief you can remain hard working and quiet because your success will do the talking.