Making friends as an adult can feel like a baffling obstacle course. Why was it so much easier to connect as kids? To help you find well-rounded and fulfilling friendships, psychologist Marisa Franco discusses science-backed tips on how to make (and keep) friends, like the optimism-inducing "acceptance prophecy" and the shame-reducing "theory of chums." Learn more about the power of platonic love and how it can help you experience the full richness and complexity of who you are. (This conversation, hosted by TED current affairs curator Whitney Pennington Rodgers, was part of an exclusive TED Membership event. Visit ted.com/membership to become a TED Member.)