Complex sentence: After completing his psychoanalytic training, Minuchin worked as a child psychiatrist at the Wiltwyck School for delinquent boys, where he decided that treating whole families would be worthwhile.
Split into simpler sentences: After completing his psychoanalytic training, Minuchin worked as a child psychiatrist at the Wiltwyck School for delinquent boys. It was at the Wiltwyck School that Minuchin decided that treating whole families would be worthwhile.