One of my favorite parts of being a therapist is when a client asks a question that changes the way I think.

Recently, while preparing for an EMDR session, a client asked, “I’m already really good at compartmentalizing. Why would I need the Container exercise?”

It’s such a great question.

On the surface, compartmentalizing and the EMDR Container seem remarkably similar, and with the same purpose. Both involve setting something aside rather than dealing with it immediately. If that’s all you know about the Container exercise, if course one would wonder why we would intentionally teach someone a skill they already have.

As we explored the question together, I realized that the difference isn’t what we’re doing. It’s how we’re doing it.

Many of us have become incredibly skilled at compartmentalizing, particularly if we’ve experienced trauma, chronic stress, or environments where our emotions weren’t welcome. Our brains learn to tuck difficult thoughts, memories, or feelings away so we can keep functioning. We go to work, care for our families, finish a project, or just make it through the day.

Compartmentalizing isn’t a flaw; it’s an adaptive survival response. It exists because, at some point, it helped us get through something we didn’t have the capacity to process. In other words, compartmentalizing isn’t the enemy.

In fact, it’s evidence of an incredibly resilient nervous system. Your brain figured out how to help you survive when slowing down wasn’t an option. That’s amazing.

The problem, though, is that many of us never got to choose when to use it, or when to stop. That’s where the EMDR Container comes in as a useful tool.

Rather than our nervous system automatically deciding that something is too much, we’re making a conscious decision to set something aside temporarily. Instead of our brain saying, “Nope, we’re not going there,” we’re saying, “This matters, but now isn’t the right time. I’ll come back to it when I have the space and support to give it the attention it deserves.”

The distinction may be subtle, but it’s profound.

Comparmentalization happens to us, and is driven by survival. The Container happens through us, and is guided by intention.

I often think of it this way: compartmentalizing closes a door because your nervous system believes it has to. The Container leaves the door unlocked. You’re choosing to close it for now, trusting that you’ll come back when you’re ready.

Often, healing isn’t about forcing ourselves to process everything immediately. In fact, one of the biggest misconceptions about EMDR is that it’s about diving into painful memories as quickly as possible. It isn’t.

A significant part of EMDR is helping people develop enough safety and regulation that they can approach difficult experiences without becoming overwhelmed by them.

The Container is one of the many preparation tools we use to support that process. It’s purpose is not about avoiding emotions or pretending something doesn’t matter, but rather, respecting your nervous system’s capacity in the present moment.

Think about receiving upsetting news ten minutes before an important work presentation. You probably don’t have the time, or the emotional bandwidth, to fully process it right then. You could automatically suppress it and hope it stays buried, or you could intentionally acknowledge what you’re feeling, mentally place it in your Container, and remind yourself that you’ll return to it after the meeting.

Externally, those situations look the same. Internally, they’re very different experiences. One is autopilot; the other is choice.

That’s what so much of trauma healing is really about. Client often don’t new a new set of skills. This exercise is about reclaiming choice in the skills we’ve been using all along.

Many trauma responses began as intelligent adaptations to difficult circumstances. They help us survive. The healing process gives us the opportunity to decide when they’re helpful and when we’d like to respond differently.

That client reminded me of something I’ll probably carry into many future sessions: sometimes part of our healing journey is still continuing to put things away. That’s exactly what we need to do sometimes. And over time, we can learn to do it intentionally instead of automatically.

That small shift (from reacting out of survival to responding with choice) can change far more than we realize.