Tranquil Heart: Vibrational Heart Medicine for Balancing the Emotions in Times of Stress It is a heart-centered approach to anxiety and stress relief, and is intended to support emotional stability in times of stress or whenever there is a preponderance of negative emotion. With extended use, you may notice a tranquil sense of of love and gratitude, which naturally produces a state of heart-centered equanimity. It is best used by individuals looking for increased emotional stability during stressful situations.