One of the books I've been working my way through recently is David C. Korten's The Great Turning, which I bought after seeing him speak at a conference last year. In a recent article in Yes! Magazine that distills the essence of the book nicely, Korten suggests that one of the barriers to achieving the world we want to live in is that this story about who we are loops endlessly in our heads:
It is our human nature to be competitive, individualistic, and materialistic. Our well-being depends on strong leaders with the will to use police and military powers to protect us from one another, and on the competitive forces of a free, unregulated market to channel our individual greed to constructive ends. The competition for survival and dominance—violent and destructive as it may be—is the driving force of evolution. It has been the key to human success since the beginning of time, assures that the most worthy rise to leadership, and ultimately works to the benefit of everyone.