The successful leaders we work with - global influencers - don't need more nuggets (cognitive) or tips and tricks (behavioural). Impacting globally, they need existential wisdom. And, although we have an innate capacity to realise wisdom, our capacity waxes or wanes due to social pressures, the presence or absence of appropriate role models, and the presence or absence of deliberate intention and effort.
They, like the great sages of the past; the Buddha, Confucius, Aristotle, know that wisdom is something to be cultivated, through the development of virtues (such as benevolence, courage, equanimity, truthfulness, fairness, and compassion) and practiced over time.