Dr. Covey's work contributed to a shift in leadership development, emphasizing character-based ethics and core principles such as integrity and trust. This was a shift from a Personality-focused leadership style.

His seminal work, The Seven Habits of Highly Effective People, profoundly impacted business during the 90's. He stressed the importance of taking the initiative, setting clear goals, prioritizing tasks, seeking mutually beneficial outcomes, understanding others, collaborating effectively, and continuous growth.

His framework was seen as fundamental to both personal and professional success.