Firestone, Mary: - Mary Firestone is a graduate of Princeton University and has an MA in clinical psychology from Pepperdine University. Her own transformative epiphanies led her, along with her sister Lucy, to found their company Firestone Sisters in 2012, with the aim of providing others with healing and growth opportunities. She's been featured in Goop, Well+Good, and Forbes. She resides in California. Learn more at firestonesisters.com.