What is the main conflict in Lyndon Johnson and the American Dream by Doris Kearns Goodwin?

Doris Goodwin provides an insightful, intimate look at the private Lyndon Johnson that the public never knew. From his meteoric rise to power and the presidency, the reader gains full understanding of this complicated, driven figure of twentieth century politics and the almost Shakespearian-like fatal flaws which lead to his downfall.