Success is often portrayed as the result of intelligence, talent or good fortune, but many of the world's most accomplished leaders argue that sustained effort is what truly separates high achievers from the rest. Among them is Jamie Dimon, the chairman and chief executive officer of JPMorgan Chase, whose decades-long career has made him one of the most respected figures in global finance.

JPMorgan CEO Jamie Dimon discussed the dangers of insecurity in leadership, as well as advocating for humility and transparency in corporate culture.

The JPMorgan CEO says leaders get into trouble when their insecurity discourages employees from delivering bad news.