Sara Green, 17, died as a result of self-harming as an in-patient in a mental health unit. BBC Panorama was given access to Sara's diary that she kept, showing how she was failed by the child and adolescent mental health system in England.

If you are affected by any of the issues raised in this video, you can contact ChildLine on 0800 1111 (UK) or the Samaritans on 116 123 (UK).

You can watch Panorama "I'm Broken Inside: Sara's Story" on Monday 11 April at 19:30 BST on BBC One. Or catch up later here on iPlayer.