Ms. Rachel captivated the crowd with an emotional commencement speech at New York University's Steinhardt School. The popular online children's educator, whose real name is Rachel Griffin Accurso, began her speech by saying how "incredibly honored" she was to be on the stage and thanking the faculty, staff and senior leadership at NYU. Ms. Rachel opened up about her experience with imposter syndrome when she was invited to be an early childhood expert at an event recently: "A lot of us think we'