People with soul enough to humanize technology and heart enough to stay the course. And by the way, recognize the unending war between ambition and satisfaction. They are at odds in life. If you're ambitious, you're seldom satisfied. And if you're satisfied, you're not ambitious.
Genuine leaders experience success and failure.
But what separates them from the rest of the pack is they tried. They took action. Don't worry about failure. Others will worry about it for you. And besides, only the mediocre are always at their best.