<p>'I no longer want to live someone else's idea of who and what I should be. I'm going to be me.'<br>'I just absolutely thought I was the luckiest girl in the world.'<br>Diana Spencer's engagement to Prince Charles, announced in 1981, first cast the spotlight on the young girl who was to become one of the most intriguing and influential royals in modern history ? despite deep and exasperated resistance in traditional royal circles, not leas...