We know that great leadership takes not just intelligence and drive but also the ability to get along well with and learn from others. The key, says Amer Kaissi, is to be both ambitious and humble throughout your career. He's studied how people succeed across diverse industries and offers advice of how to find a better balance between our desire to achieve and the qualities that earn more respect from colleagues. Kaissi is a professor of healthcare administration at Trinity University and the author of Humbitious: The Power of Low Ego, High Drive Leadership.