"To believe yourself invested with divine self-sufficiency is not the mark of a strong individual, but of a person who has mistaken the crowd’s worship – or jeering – for the truth. The single greatest danger for a founder is to become so certain of his own myth that he loses his mind. But an equally insidious danger for every business is to lose all sense of myth and mistake disenchantment for wisdom."
TLDR; Balance madness and wisdom of the crowds - Find the balance between humility and self-belief
"To believe yourself invested with divine self-sufficiency is not the mark of a strong individual, but of a person who has mistaken the crowd’s worship – or jeering – for the truth. The single greatest danger for a founder is to become so certain of his own myth that he loses his mind. But an equally insidious danger for every business is to lose all sense of myth and mistake disenchantment for wisdom."
TLDR; Balance madness and wisdom of the crowds - Find the balance between humility and self-belief