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You Only See What You're Looking For
How the Reticular Activating System Filters Your World
Have you ever decided to buy a particular car, let's say a red Mini, and then suddenly noticed red Minis everywhere? They were always there. Thousands of them, driving past you every day, but you didn't see them. Until you did. And then you couldn't stop seeing them!
That is not coincidence. That is not the universe sending you signs.
That is your Reticular Activating System doing exactly what it was designed to do. And once you understand the implications of that, truly understand them, the way you think about personal growth, identity, and possibility will never be the same.
What Is The Reticular Activating System
The Reticular Activating System (RAS) is a network of neurons located in the brainstem, specifically centred in an area called the reticular formation. It acts as the brain's primary filter and gatekeeper, processing the estimated 2 million bits of sensory information that arrive every single second and deciding which 134 bits - a tiny, curated fraction, make it through to conscious awareness.
Your RAS is responsible for regulating arousal, wakefulness, and attention, but its most profound and often overlooked function is this: it filters reality based on what it has been told matters. And what it has been told matters is largely determined by your beliefs, your identity, and your dominant thoughts.
Neurologically, the RAS communicates bidirectionally with the cortex, particularly the prefrontal cortex, which governs goals, values, and self-concept. It receives instructions from higher brain centres about what to prioritise and then scans the incoming sensory torrent for matching data. It is, in the most literal sense, a reality-selection mechanism.
Change what you believe about yourself, and you will change what you see in the world around you.
The Science Of Selective Attention
One of the most well-known psychology experiments is the Invisible Gorilla (Selective Attention Test) study by Daniel Simons and Christopher Chabris. In this experiment, people are asked to count how many times a basketball is passed between players. While they’re focused on this task, a person in a gorilla suit walks right through the scene and many people don’t notice it at all.
This isn’t just a surprising trick. It shows something important: your brain filters reality based on what you’re focusing on. If your attention is directed in one place, you can completely miss something obvious.
In the brain, this filtering process involves the RAS working alongside areas like the anterior cingulate cortex and the thalamus. You can think of it like a gatekeeping system. The thalamus acts as a relay station for incoming information, while the RAS helps decide what gets through and what doesn’t.
What gets through these “gates” shapes how you see the world and that influences your behaviour, your decisions, and ultimately your life.
Selective Attention Test - watch on YouTube
Research backs this up. A 2017 study by Luca Baldassarre and colleagues used brain scans (fMRI) to show that this filtering system isn’t fixed. It constantly updates based on your goals and your environment. In simple terms: your brain is always being “briefed” on what matters.
Your goals, beliefs, and how you see yourself all tell your brain what to pay attention to. And once your brain starts looking for something, it begins to notice it everywhere.
The RAS & Your Identity
Here is where this becomes deeply personal. Your identity, the consolidated story you carry about who you are, what you deserve, and what is possible, acts as a standing brief to your RAS. It tells the filter what to look for. And the filter dutifully delivers.
If your identity says 'I am not creative,' your RAS will efficiently filter out the countless daily moments that might contradict that belief, the original solution you reached at work, the unusual connection you made in a conversation, the way you instinctively rearranged your living space. Those moments exist. They happen. But they don't make it through the filter, because the filter wasn't looking for them.
Conversely, if your identity says, 'I always mess things up,' the RAS will helpfully surface every mistake, every misstep, every awkward silence and present them to your consciousness as evidence. Not because they are objectively more significant than your successes, but because they match the brief.
A Real-World Example: The Job Seeker
Consider someone job-hunting after a painful redundancy. If their RAS is briefed by an identity story that says, 'the market is against people like me,' they will walk through networking events and see closed doors. They will read job descriptions and focus on the gaps in their experience. They will notice the one person who didn't respond and filter out the three who did. Their confidence is knocked.
Compare this to someone briefed by an identity of genuine, grounded possibility, not toxic positivity, but a real belief that they have something valuable to contribute. They walk into the same room and see connections, overlaps, opportunities. Same room. Different filter. Entirely different experience.
The RAS is not making them see things that aren't there. It is choosing which real things to bring to their attention. And that choice is shaped, above all else, by identity.
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The RAS and Goals
This is why vividly imagined, emotionally compelling goals are so neurologically powerful, not as motivation hacks, but as RAS programming. When you hold a goal with genuine clarity and emotional weight, you are literally changing the instructions you are sending to your brain's attention system. Research by Locke and Latham on goal-setting theory, combined with more recent neuroimaging work, confirms that specific, meaningful goals alter attentional architecture in measurable ways.
This connects deeply to what we explore in our work on Predictive Processing and Selective Perception: the brain is not a passive recipient of reality. It is an active, goal-directed filtering machine, and identity is the programmer.
The Pain: An Invisible Cage
When your RAS is briefed by a limiting identity, it constructs an invisible cage. Every day, you move through a world rich with evidence of possibility, connection, and growth and almost none of it reaches you. Not because it isn't there, but because you weren't looking for it. The tragedy is not that the world is limited. The tragedy is that the filter is, and most people never question the filter. They assume the cage is the territory.
The Prize: Consciously Reprogramming Your Reality Filter
When you understand that your RAS is programmable, that the standing brief it operates on can be consciously revised you gain something extraordinary: the ability to change what you notice, and through what you notice, what becomes possible. Research in goal-setting, mindset, and identity-based behaviour change all converge on the same insight: when you update the self-concept that briefs the filter, the world you experience genuinely changes. Not as metaphor. As neurology.
What You Focus On, Grows
The predictive brain is not a fixed system, it is a living, dynamic model-building machine. Understanding that you are living inside a prediction, and that predictions can be updated, is the beginning of taking genuine authorship of your life.
The question is not 'what is the world like?' The question is 'what model of the world am I currently running and is it still serving me the way I want it to?'
You don't have to live inside yesterday's predictions. The brain that built the walls can build the doors.
Ready To Rewire Your Identity?
If you've been circling the same problems, the same patterns, the same invisible walls, it may be time to examine what your filter is set to find. At UrMind, we help you understand the identity stories briefing your attention and guide you in consciously updating them. The world you will discover on the other side may surprise you.
If you're interested, drop me a message.
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