Not All People With BPD Are the Same. Why is Their Treatment?

A few years ago, I took on two new clients within a few weeks of each other. On paper, they looked almost identical. Both had been diagnosed with borderline personality disorder. Both were struggling with alcohol use and overspending. Both were dealing with consequences in their relationships and at work.

But when we started talking about what was actually happening in the moments before they drank or swiped their credit card, something became clear: they were not struggling with the same problem at all.

The first client reached for alcohol or went shopping whenever her emotions became overwhelming. Drinking and spending weren't things she planned. They escaped from shame, sadness, and anxiety that felt unbearable in the moment.

The second client described her behavior completely differently. It wasn't about numbing anything. She said yes to whatever felt exciting whenever the opportunity came up. The behavior was automatic and sensation-driven, not emotionally motivated.

Same diagnosis. Same symptoms. Completely different underlying processes.

Seeing these two clients side by side changed the way I think about treating BPD. If two people can arrive at the same diagnosis through entirely different psychological pathways, it doesn't make sense to assume they need the exact same intervention.

One Diagnosis, Many Different Presentations

One of the most common misconceptions about mental health conditions is that everyone with the same diagnosis looks the same. In reality, most diagnoses cover a lot of ground. This is especially true for BPD.

There are 256 different combinations of symptoms that can result in a BPD diagnosis. Two people can share the diagnosis and have only a single symptom in common. One person's BPD might be primarily driven by intense, overwhelming emotions. Others might center on deep distrust of other people's motives. A third might struggle most with impulsivity and sensation seeking. Many people experience all of these to some degree, but the mix looks different for each person.

That variation matters enormously when it comes to treatment.

Why Current Treatments Work for Some People and Not Others

We have several well-researched, evidence-based treatments for BPD, and all of them have helped a lot of people. But they approach the disorder from different angles, and that's worth understanding.

Dialectical Behavior Therapy (DBT) treats BPD primarily as a disorder of emotion dysregulation. The focus is on helping people tolerate distress, regulate intense emotions, and respond to difficult situations more effectively. It's an excellent fit for people whose symptoms are mainly driven by overwhelming emotional states.

Mentalization-Based Treatment (MBT) and Transference-Focused Psychotherapy (TFP) take a different approach. Both focus more heavily on how people understand themselves and others in relationships, including the assumptions and expectations they bring into interactions. These are often a better fit for people whose symptoms are driven more by relational patterns and difficulties with trust.

When these treatments are compared head-to-head, they tend to produce similar overall outcomes after roughly a year of twice-weekly therapy. That's good news. The catch is that a meaningful portion of people don't respond to any of them. And one likely reason is that a treatment targeting emotional dysregulation may not be what someone needs if their BPD is primarily driven by impulsivity or relational distrust.

The behavior is the same. The mechanism is not.

Why the Mechanism Matters More Than the Behavior

Go back to my two clients for a moment. An emotion-focused intervention like DBT would probably be a strong fit for the first client, the one who was drinking and spending to escape emotional pain. Her symptoms were driven by the emotional pathway, and DBT is built to address exactly that.

But for my second client, whose impulsive behaviors were about excitement and sensation rather than emotional escape? The same intervention might miss what's actually maintaining her behavior. She doesn't need better skills for tolerating emotions. She needs something that addresses why she says yes to every stimulating opportunity in front of her.

This applies across almost every BPD symptom. Frequent relationship conflicts can stem from big emotional reactions that escalate situations, which points toward emotion-focused work. Or they can stem from chronic suspicion of other people's motives, which calls for something more relational. The symptom looks the same from the outside. What needs to change is different.

Matching Treatment to the Person

BPD Compass is a new treatment approach for people with BPD that was explicitly designed for personalized treatment plans. Rather than assuming every person with BPD should receive the same intervention, Compass begins by identifying the psychological processes most responsible for maintaining that individual's symptoms. 

The treatment starts with an assessment to determine which psychological processes are driving your symptoms. Then, clients work through the modules that are most relevant to them. 

In clinical trials, BPD Compass led to significant reductions in BPD symptoms. And, because the psychological processes targeted are also relevant to other disorders, the treatment also improved symptoms of depression, anxiety, eating disorders, and substance use disorders.

Additionally, since BPD is Compass is personalized and provides the most relevant skills first, it can be delivered in 18 weeks—a much shorter duration than existing treatments. 

Looking Beyond the Diagnosis

A diagnosis tells you what problems someone is experiencing. It doesn't tell you why those problems persist, or which process is doing the most damage for that particular person.

As our understanding of BPD continues to develop, I think the future of treatment is less about finding one therapy that's better than all the others and more about getting better at matching the right intervention to the right person. A treatment that works well for someone whose BPD is driven by emotion dysregulation may do little for someone whose symptoms are primarily about impulsivity or relational distrust. And vice versa.

If not all people with BPD look the same, there's no good reason to expect they all need exactly the same treatment.

The BPD Compass Workbook expands on these ideas with a personalized, evidence-based approach to understanding and treating BPD. Rather than offering a one-size-fits-all set of skills, it helps you identify the specific patterns driving your symptoms and guides you through behavioral experiments designed to create lasting change.