As another school year winds down, we are reminded of the teachers who've made a difference in our lives. Teacher Appreciation Week comes at the end of may and ABC News journalist Deborah Roberts has curated a collection of essays and musings from celebrity friends and colleagues who share how teachers changed them, imparted life lessons, and helped them to get where they are today. Contributors include dancer Misty Copeland, chef Rachel Ray, actors Brook Shields and Octavia Spencer as well as colleagues Robin Roberts, Jenna Bush-Hager and Oprah Winfrey.