Book cover of Retrain Your Brain by Seth J. Gillihan

Seth J. Gillihan

Retrain Your Brain

Reading time icon16 min readRating icon3.8 (1,869 ratings)

“What if you could teach your brain new ways of thinking, no matter your age? Retrain Your Brain shows you how to change your thought patterns and improve your mental health.”

1. Your Brain Can Change at Any Age

Your brain is plastic, meaning it can reorganize itself by forming new neural connections. This ability is called neuroplasticity, and it doesn't matter how old you are or what challenges you face – your brain can adapt. With consistent practice, new habits become ingrained in your brain, opening up endless possibilities for personal change.

Scientific examples make this concept tangible. For instance, London taxi drivers studying for "The Knowledge," a challenging test about the city's layout, experience measurable growth in their hippocampus. Similarly, any goal – like healthier eating or staying calm under stress – can be tackled by breaking it into small steps. Each small success rewires your brain.

Self-compassion plays a vital role in embracing change. When students facing stress practice being kinder to themselves, they avoid falling into harmful negative thought loops. Encouraging thoughts like, "I'm doing my best," pave the way for success by creating positive neural pathways.

Examples

  • London taxi drivers expanding their hippocampus while memorizing city maps.
  • Adding one fruit or vegetable a day to build healthy eating habits.
  • A student giving themselves a break instead of being overwhelmed by an overdue assignment.

2. Mindfulness Brings You Back to the Present

Mindfulness meditation is a practice of focusing on the present moment with curiosity and no judgment. It trains you to become less reactive, more resilient, and better equipped to handle stress and difficult emotions. Instead of spiraling into negativity, mindfulness redirects your attention and helps calm emotional storms.

For example, after a breakup, emotions like sadness and regret can take over. Practicing mindfulness meditation, starting with just 10 minutes of sitting quietly and focusing on your breath, helps bring your attention to the here and now. Over time, mindfulness builds healthier emotional responses and self-compassion.

Studies support its effectiveness. Participants in one study who practiced mindfulness meditation for eight weeks saw a 50% reduction in depression, anxiety, and stress symptoms. It’s also proven to be as effective as medication in treating certain mood disorders, offering a natural and empowering alternative.

Examples

  • Observing your breath during a breakup instead of fixating on regrets.
  • A study showing an eight-week mindfulness course can reduce anxiety by half.
  • Mindfulness acting as an alternative to medication for some mental health conditions.

3. Break Free from Negative Thought Patterns

Cognitive distortions, like thinking all-or-nothing or imagining the worst-case scenario, are mental traps that worsen anxiety and stress. Our inner dialogue can be sabotaging, but Cognitive Behavioral Therapy (CBT) offers ways to challenge these thoughts and replace them with more realistic alternatives.

CBT involves identifying distortions and questioning them. For example, if you're convinced a presentation will be a disaster, you might ask, "What evidence do I have for this? Have I succeeded at something like this before?" By examining the evidence, you start to see how your mind exaggerates problems.

Behavioral activation complements this by encouraging fulfilling activities. If depression makes you stop doing something you love, like hiking, starting with small steps (like walking in a park) reignites joy. These practices combine to break the cycle of negative thinking and emotional paralysis.

Examples

  • Identifying catastrophizing thoughts before a job interview.
  • Writing anxious thoughts in a notebook and replacing them with balanced ones.
  • Resuming hobbies, like hiking, through small steps to combat depression.

4. Nutrition Fuels Mental Wellness

What you eat affects how you feel. Diets high in processed foods worsen anxiety and depression risks, while wholesome meals with vegetables, fruits, and lean proteins can elevate your mood. Your brain depends on quality nutrients to function best.

For example, swapping a bag of chips for vegetables with hummus or trading sugary breakfast cereal for oatmeal with fruit benefits mental and physical health. Simple changes compound into better health and improved outlook over time.

Scientific studies reinforce this connection. Diets mimicking Mediterranean food habits correlate with lower rates of mood disorders. This underscores how even minor improvements in nutrition can yield significant benefits for well-being.

Examples

  • Choosing fresh produce over processed snacks.
  • Starting the day with oatmeal and fruit instead of sugary alternatives.
  • A Mediterranean diet reducing anxiety and depression risk.

5. Exercise Promotes Mental Clarity

When you work out, your brain releases endorphins, boosting mood and reducing anxiety. Exercise strengthens body and mind alike – just 30 minutes of activity can significantly shift your outlook.

Even simple movement matters. A short walk around your neighborhood can improve focus and energy. Regular exercise fosters self-discipline and creates a positive reinforcement loop, making it easier to maintain the habit and reap ongoing benefits.

Research backs this up. Physical activity increases levels of brain-derived neurotrophic factor, a protein involved in regulating mood and supporting cognitive function. The rewards, both immediate and long-term, make exercise irreplaceable.

Examples

  • Going for a stroll during a stressful workday to feel refreshed.
  • A study linking daily exercise to reduced depression levels.
  • The mood boost after a yoga or aerobic session.

6. Sleep Is Essential for Mental Health

Sleep affects everything from focus to mood. Poor sleep patterns are linked to anxiety and depression, while proper rest enhances emotional regulation and resilience.

Consistent routines are key. For example, having a set bedtime and waking time, coupled with a relaxing pre-sleep habit like reading a book, improves sleep quality. Sleep plays a restorative role, helping your mind handle daily challenges.

Chronic insomnia can complicate mental health further, but relaxation techniques ease this issue. Progressive muscle relaxation, mindfulness exercises, or even taking a warm bath can pave the way for better nights.

Examples

  • Following a regular bedtime schedule, even on weekends.
  • Using mindfulness to calm racing thoughts before bed.
  • Creating a cozy sleep environment with minimal distractions.

7. Strengthen Relationships for Happiness

Social connections protect against stress and enrich life. Having a strong support network lowers risks of depression and reinforces a sense of belonging.

To strengthen these bonds, prioritize face-to-face interaction. Share coffee with a friend, plan group gatherings, or join shared-interest activities like a book club. Avoid digital-only interactions, which can’t replace the depth of in-person connection.

Gratitude deepens relationships. A simple thank-you or kind gesture establishes goodwill and strengthens the connection between you and loved ones.

Examples

  • Attending a book club to meet like-minded people.
  • Expressing gratitude to family members for their support.
  • Meeting up with friends for a hike to enjoy quality time together.

8. Rewriting Your Self-Talk

Your inner dialogue shapes how you view yourself and the world. By shifting from self-criticism to encouragement, you foster resilience and positivity.

For example, replacing “I always fail at this” with “I can try again and do better next time” changes your frame of mind. Positive self-talk isn't about ignoring challenges; it’s about approaching them with a solution-oriented mindset.

Gratitude journaling helps here too. Reflecting on what you’re thankful for builds an optimistic atmosphere inside your mind.

Examples

  • Telling yourself you’ll learn from a mistake rather than beating yourself up.
  • Writing one gratitude note daily to reframe your perspective.
  • Motivating yourself with supportive phrases before big events.

9. Small Steps Create Big Change

You don’t need to overhaul your life overnight. Small achievable actions, repeated consistently, pave the way for long-term success. Whether it’s starting meditation with two minutes rather than 20 or walking one block instead of a full mile, incremental changes create momentum.

The power of these tiny wins lies in their cumulative impact. They allow you to build habits without feeling overwhelmed, making change seem realistic and sustainable.

Over time, these seemingly small steps add up to transformational progress. Focus on steady improvement rather than immediate results.

Examples

  • Meditating for two minutes and gradually increasing the time.
  • Walking a short distance each day to build an exercise habit.
  • Tackling one small task on a large project to feel productive.

Takeaways

  1. Start practicing mindfulness meditation for just two minutes daily to help calm your thoughts and emotions.
  2. Keep track of negative thoughts and challenge them to shift to more balanced perspectives using CBT techniques.
  3. Prioritize your physical and social health by exercising regularly, eating whole foods, and nurturing relationships through in-person interactions.

Books like Retrain Your Brain