Powell

"Naysayers are everywhere. They feel it's the safest position to be in. It's the easiest armor to wear...And they may be right in their negativity; reality may be on their side. But chances are very good that it's not. You can only use their naysaying as one line the spectrum of inputs to your decision. Listen to everyone you need to, and then go with your fearless instinct.

Each of us must work to become a hardheaded realist, or else we risk wasting our time and energy pursuing impossible dreams. Yet constant naysayers pursue no less impossible dreams. Their fear and cynicism move nothing forward. They kill progress. How many cynics built empires, great cities, or powerful corporations?"
-Colin Powell, It Worked For Me: In Life and Leadership