Celebrated as Apple's 2017 iPhone App of the Year, Calm is a Bay Area unicorn that's helping people all over the globe find a little peace in a turbulent world. As head of lifecycle marketing for Calm, Sue Cho is tasked with keeping customers happy, and converting —from free to paid accounts. Armed with data, email and an endorsement that led to a content deal with NBA superstar LeBron James, Sue takes us inside the very busy world of Calm's success.