The DIY option was perfect for the “me” decade. People who felt unfulfilled could send off for a little green booklet with a self-scoring guide. Like reading a horoscope or doing a love quiz in Cosmopolitan, bored suburbanites could fill out the Myers-Briggs chart during the commercial breaks of Kojak and discover their “true type.” By 1979, more than a million Myers-Briggs answer sheets had been sold.