At just 30 years old, Sam Polk was a senior trader for one of the biggest hedge funds on Wall Street, on the verge of making it to the very top. When he was offered an annual bonus of $3.75 million, he grew angry because it was not enough. In that moment he knew he had lost himself in his obsessive pursuit of money. And he had come to loathe the culture - the shallowness, the sexism, the crude machismo - and Wall Street's use of wealth as the sole measure of a person's worth. He decided to walk away from it all.