Growth and higher revenues

Organizations always speak of growth and higher revenues, however, many still fail. Look at Toys R Us and Sears. So what happened? Didn’t they have smart people with broad skills? Why did they miss the mark? In many cases, it is found that the leaders become complacent or they do not truly assess the market correctly. Are you willing to explore ways of enhancing your skills and abilities or are you only prepared to exploit your current strengths for the rest of your career? Can over-confidence become a hindrance to your development? Why? If not, Why not?