Your Brain Isn't the Whole Story: The Heart Science That Changes How We Think About Mental Health
May 20, 2026💭 Go deeper: We talk more about this in episode #266 of the Joy Lab Podcast.
Most mental health advice points straight at your brain. Balance your neurochemicals. Rewire your thoughts. Think your way to calm. Yes, the brain matters. But it's not all that matters when it comes to mental health.
The heart isn't just a pump.
A growing field called neurocardiology is revealing something that traditional healing practices and our own intuition have known for a lonnnnnggg time: the heart influences what we perceive. The heart has its own complex neural network, often called the "heart-brain." It produces hormones and neurotransmitters, including oxytocin (yes, the love hormone). And most of the fibers in your vagal nerve (the main nerve of your parasympathetic nervous system) carry information from the heart to the brain. Not the other way around.
Translation: your heart is actively shaping how you experience the world, not just responding to it.
So what does "cultivating a good heart" actually mean?
It means opening up, staying connected, and consistently practicing it.
There are three heart-centered practices worth trying if this is new to you:
- Self-acceptance — releasing the daily drumbeat of self-judgment. This one's continuous, happening all day, every time you catch yourself believing you're not enough.
- Loving-Kindness meditation — bringing people to mind, holding them in your heart, and offering them a simple silent blessing.
- Compassion practice — a close cousin to loving-kindness, but with a specific awareness that the person you're holding is carrying some kind of suffering. Just like you. Just like all of us.
And then there's the simplest practice of all: The Three Kindnesses.
The idea is just to notice kindness. It's already happening around you, constantly. Here are three types to notice:
- When someone is kind to another person.
- When someone is kind to you, even in small ways.
- When you are kind to someone else.
With our heart, we make the world. If you want to live in a kinder one, you are where it starts.
