Unlocking Your Brain's Hidden Filter: How the Reticular Activating System Shapes Your Daily Life
- George Whitaker

- Jul 24
- 3 min read
Have you ever bought a new car and noticed how you suddenly see that same model everywhere? This fascinating experience is largely due to the Reticular Activating System (RAS), a small but powerful group of neurons in your brainstem. Think of the RAS as your brain's filter; it focuses on what matters to you and helps you ignore distractions. So, how does this work, and how can you use your RAS to improve your everyday life?
What is the Reticular Activating System?
The RAS is essential for regulating your attention and awareness. It actively filters out information that is not relevant while enhancing things that capture your focus. For instance, when you're in a crowded room, your RAS helps you zero in on someone calling your name, allowing you to engage in conversation while ignoring background noise.
This system acts as a crucial gateway for sensory information, determining what reaches your conscious mind. When you set clear goals—for instance, targeting a promotion at work or preparing for a marathon—the RAS helps you identify valuable opportunities or information that aligns with your objectives. Research indicates that people who set specific goals are more likely to succeed - Dr. Gail Matthews at Dominican University of California found that you are 42% more likely to achieve your goals if you write them down (Matthews, 2007).
Ways the RAS Can Work Against Us
While the RAS is beneficial, it can also have a negative impact. For example, if you often dwell on negative thoughts, your RAS may amplify this mindset by filtering in information that reinforces those beliefs. You might find yourself focusing more on your mistakes than your successes, leading to a cycle where you overlook chances for improvement.
Stress is another factor. When you experience overwhelm, your RAS can heighten distracting stimuli, making it challenging to concentrate on important tasks. Maintaining a balanced outlook is vital, as the RAS can easily lock onto whatever you are frequently thinking about, whether it’s positive or negative.
How to Use Your RAS to Your Advantage
The good news is that you can train your RAS to work for you. Here are some practical strategies to harness its potential:
Set Clear Intentions: Clearly define what you want to achieve. Research shows that writing down goals can increase the likelihood of success by 42% (Matthews, 2007). Positive affirmations can also prepare your RAS to recognise opportunities that align with your goals.
Visualise Your Goals: Create a vision board or dedicate a few minutes daily to visualising your aspirations. For example, if your goal is to run a marathon, visualise crossing the finish line. This sends a signal to your RAS to pay attention to cues related to running and focuses you on achieving these targets.
Practice Mindfulness: Engaging in mindfulness exercises, such as when using meditation, hypnosis or deep breathing, helps sharpen your focus and reduce distractions. Growing research indicates that regular mindfulness can significantly enhance cognitive functions, including attention and focus. Studies show that consistent engagement in mindfulness techniques can lead to improved sustained attention, reduced mind-wandering, and better attentional control. This helps your RAS to filter what's truly important.
Surround Yourself with Positivity: Fill your surroundings with uplifting messages and supportive relationships. Research shows that positive environments can enhance motivation and resilience, guiding your RAS to recognise the good around you.
Keep Learning: Engage in subjects that excite you. For instance, if you're passionate about cooking, exploring new recipes will boost your RAS's ability to filter for relevant cooking tips and ideas. The more involved you are, the more your RAS will help you uncover useful information.

Empowering Your Daily Life with the RAS
Understanding the Reticular Activating System opens up exciting possibilities for enhancing your focus, productivity, and overall well-being. By learning to guide this hidden filter in your brain, you can prioritise meaningful aspects of your life and reduce distractions. Start by setting clear intentions, cultivating positivity, and embarking on new learning adventures. Your RAS is ready to help you unlock your potential and lead a more fulfilling life!



