Watch these video clips about Mentalization Based Treatment.
In the first one Professor Peter Fonagy explains the main principles of Mentalization:
https://www.youtube.com/watch?v=OHw2QumRPrQ
Professor Anthony Bateman also features in this video about MBT and borderline personality disorder:
https://www.youtube.com/watch?v=kxUHILbZNaY