"The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low, and achieving our mark."
It's simple ... the most successful people in history aren't afraid of high expectations - they thrive on them. If you want to achieve huge, you can't ask yourself to strive for little. The challenge for most is the illusion of failure if the goal isn't reached, but failure can only happen if we succumb to the fear of missing our mark.
Raise the bar higher than most can fathom, and have the courage to attack that bar with unrelenting dedication!