The author reflects on things they would do differently if given the chance to redo their career. Some key lessons include setting aside more time for strategic thinking, celebrating successes more openly, socializing over lunch instead of eating alone, maintaining humility, being a lifelong learner, managing stress through laughter, building fewer barriers with others, and nurturing an entrepreneurial spirit in those they lead. The author encourages readers to consider asking interview candidates what they would change and do differently to gain insight into their character.