What keeps you excited about your job? What drives you to be your best? Talk about your positive triggers and let the hiring manager know how they can best work with you, should you be the successful candidate.
"I am a natural leader and feel that I give my best work when I am responsible for others, or an important project. Feeling like a necessary part of the team is really important to me. I want the company I work for to succeed so that I am successful as well."