Get ready for the new nine must-have 'personality types'... thanks to Gwynnie: Gwyneth Paltrow reveals she's an 'Enneagram Type 1'. So what are they? And which one are you?

This week, American actress Gwyneth Paltrow announced she is 'type one' on the Enneagram scale - a 'Reformer' - crediting the test with helping her to kick her cigarette habit.