Lessons in Leadership: How Lincoln Became America's Greatest President
"It wasn't Abraham Lincoln's strengths but the self-discipline with which he used those strengths for the right purpose.
There is much we can learn by studying Abraham Lincoln's journey from being just another politician to becoming America's greatest president. (Wikipedia provides a compilation of "Historical rankings of Presidents of the United States" which makes it clear that in the eyes of many experts, and the public, Lincoln has consistently held this status). A key to this transformation was how Lincoln, whose birthday is today, developed the self-discipline to take one of his signature strengths—his mastery of language—and use it to serve the interests of the American people rather than his own."