From The Power Paradox:
People who excel in their power—the physician who improves the health of dozens of people a day, the high school teacher who inches her students toward academic success, the writer whose piece of fiction stirs others’ imaginations—they all know this. They feel the rush of dopamine and vagus nerve activation in the purest moments of empowering others and lifting up the greater good.
If you remain aware of this feeling and its context, you will not be entrapped by myths that power is money, or fame, or social class, or a fancy title. Real power means enhancing the greater good, and your feelings of power will direct you to the exact way you are best equipped to do this.