Rosegrant is a clinical psychologist and psychoanalyst whose private practice with adults, teens, and children is in Ypsilanti, Michigan. John has published widely in the psychoanalytic literature on topics including psychoanalytic technique, short-term psychotherapy, play therapy, dreams, fairy tales, Harry Potter, the World of Warcraft computer game, and Tolkien, and has published several papers in the Tolkien literature. John is also the author of the Gates of Inland Young Adult Fantasy series.