The HeartMath Institute in Northern California has found that meditation promotes greater peace of mind by creating coherence—more harmonious heart rhythms and greater balance in our nervous systems. They've developed various forms of heart coherence meditation, which can reduce stress, improve mental clarity, and lead to better health.  Recent research has shown that people who practiced heart coherence meditation daily for four weeks experienced positive changes in their brains.
Demonstrating how we are all interconnected, HeartMath researchers have found that when we achieve greater heart coherence, our energies can promote greater peace of mind in those around us. 
Heart coherence meditations combine mindful breathing with an added focus on the heart. Here is a short way to practice this today:
- Focus your attention on the center of your chest, in the area of your heart. You can place your hand on your heart to help you focus.
- Breathe slowly and mindfully, imagining that your breath is flowing in and out of your heart. Don't force your breathing. Just let it flow smoothly and easily in a rhythm that feels good to you.
- As you continue heart-focused breathing, recall a time when you felt joy, appreciation, or care for a special person, pet, or place that you enjoy. Keep this feeling in mind as you continue breathing slowly and mindfully, focusing on your heart.
- When you catch your mind wandering, return your focus to your heart.
You can practice heart coherence meditation for ten minutes or more as a regular meditation practice. When you're feeling stressed, you can also use this as a "quick coherence" technique for a minute or two to gain greater peace of mind.
I wish you joy on the path.
 Childre, D., Martin, H., Rozman, D., & McCraty, R. (2016). Heart intelligence: Connecting with the intuitive wisdom of the heart. Waterfront Press, p. 31.
 Min, J., Rouanet, J., Cadete Martini, A., Nashiro, K., Yoo, H. J., Porat,S., et al. (2023). Modulating heart rate oscillation affects plasma amyloid beta and tau levels in younger and older adults. Scientific Reports, 13, 3967.
 Childre, D., Martin, H., Rozman, D., & McCraty, R. (2016). Heart intelligence: Connecting with the intuitive wisdom of the heart. Waterfront Press, p. 127.
 Childre, D., & Rozman, D. (2005). Transforming Stress: The HeartMath Solution for Relieving Worry, Fatigue, and Tension. Oakland, CA: New Harbinger Publications. Description of this heart coherence meditation on pages 44-45.