Aminatou Sow is a thought leader and media guru. She’s a digital strategist, writer, podcast host, and co-founder of Tech LadyMafia. She’s worked in media, on public policy, at a toy store, and at Google. She’s worked for herself and had collaborators such as longtime friend Ann Friedman, with whom she hosts the Call Your Girlfriend podcast. Most recently, the pair have embarked on a new project together: their much-talked-about book, Big Friendship: How We Keep Each Other Close. “If you’ve ever had a friend, or you’ve ever known anyone who has a friend, you have to read this book,” gushes Hillary Kerr in the latest episode of Second Life.