Dialectical Behaviour Therapy gets recommended a lot and explained very rarely. People turn up having been told they “need DBT” by a hospital, a GP or the internet, with no clear idea what that involves or why it was suggested.

Where it came from

DBT was developed by Marsha Linehan in the late 1980s, initially for people who were chronically suicidal and self-harming, and who were not being helped by the treatments available. Many of them had a diagnosis of borderline personality disorder.

Linehan noticed something important. Standard cognitive behavioural therapy is built on change: here is a thought, here is why it is unhelpful, let us alter it. For people whose lives had involved being repeatedly told that their reactions were wrong, a therapy built entirely on change landed as one more person saying you are the problem. They left treatment.

The dialectic

That is where the awkward word in the name comes from. A dialectic is holding two apparently contradictory things at once, and the central one in DBT is this: you are doing the best you can, and you need to do better.

Both are true simultaneously. Not a compromise between them, not one softening the other. Acceptance and change, held together. That sounds abstract until you have sat with someone who has spent their life being handed only one half of it.

What it actually consists of

DBT teaches four sets of skills, and the practical work is largely learning and drilling them.

Mindfulness is the foundation, and it is not meditation for relaxation. It is the capacity to notice what is happening inside you without immediately acting on it, which is the gap everything else depends on.

Distress tolerance is for the moments when the feeling is unbearable and you cannot fix the situation. Getting through the next twenty minutes without doing something that makes tomorrow worse.

Emotion regulation is the longer game: understanding what emotions do, reducing how vulnerable you are to overwhelming ones, and changing them when it is appropriate to.

Interpersonal effectiveness is asking for things, saying no, and handling conflict without either capitulating or detonating.

Who it helps

The strongest evidence is for borderline personality disorder and for chronic self-harm and suicidality. It is a genuinely well-supported treatment for both.

It has since been adapted with good results for a wider group: eating disorders, particularly where bingeing or purging is functioning as emotion regulation; substance use; and treatment-resistant depression. There are established adaptations for adolescents.

The common thread is not the diagnosis. It is emotions that arrive fast and enormous, and behaviour in the aftermath that causes damage. If that pattern is familiar, DBT skills are likely to be relevant regardless of what label anyone has attached.

Who it is not for

It is demanding. There is homework, there is tracking, and there is practice between sessions. If what you need is a space to talk something through, DBT is the wrong tool and a supportive approach will serve you better.

It is also not a first-line treatment for straightforward anxiety or a single depressive episode. Those have their own well-supported treatments that are usually shorter.

Full programme versus skills in individual work

Comprehensive DBT is a package: weekly individual therapy, a weekly skills group, phone coaching between sessions, and a consultation team for the therapist. It is intensive and not available everywhere, particularly in regional areas.

What is far more commonly available, including here, is DBT-informed individual work, where the skills are taught within one-to-one sessions. It is not identical to the full programme and it would be dishonest to pretend otherwise, but for many people it is both accessible and useful.

I have advanced training in DBT and use it in my work with personality disorders and emotional dysregulation, and with eating disorders. If you have been told you need DBT and want to know what that would look like in practice, ask me.