In 2012, inspired by the HR headaches they’d observed working for technology companies, Sarah Nahm and a few friends founded Lever, a talent recruitment platform aimed at transforming the hiring process with intuitive yet data-driven software. Two years later, in 2014, she was named CEO. Based on her experiences designing what became Lever and then leading the company, she puts forward a model of entrepreneurial leadership that is about more than just stubborn confidence, and thrives by embracing the unknown and learning how to observe and trust others.