What is mentalization based therapy?
MBT is one of the evidence based therapies that is used to treat people with emotionally unstable personality disorder. It developed from psychoanalytic and attachment theories and is proven to help people improve their relationships with themselves and others and to reduce maladaptive coping strategies (such as impulsive behaviours, including self-harm)
The Anna Freud Centre website has a wealth of information about MBT, including online manuals and training resources, there are also a number of books that are highly recommended:
https://www.annafreud.org/training/mentalization-based-treatment-adults/about-mbt/
Take a look at this Youtube video by Professor Peter Fonaghy:
https://youtu.be/OHw2QumRPrQ