For us to be really good at communicating with other people we must be able to communicate well with ourselves. We need to have a strong grounding in our own values, viewpoints, and opinions and a strong sense of self. These allow us to stand tall in our own truth while allowing others to stand tall in their own. To build this strength it is important to cultivate practices that allow for reflection and communication with something larger than ourselves.
The concept of something larger than ourselves exists in many paradigms and practices. These range from ideas related to spirit, the earth/nature, to the psychology of how mammals communicate somatically. In the end it does not matter what you chose as your paradigm of existence.
What matters is how you cultivate your practices to maintain connection to something larger than yourself. What matters is that you recognize that we are all connected and how you act in your private life influences other humans and other systems (like water supplies for example). What matters is understanding that there is a shared aspect to everything we do. By taking time to recognize our connections to something larger than ourselves we relate better to those around us.
When we are better able to relate to those around us, the environment we are in, and be open to the differences between us we are more grounded in ourselves and less susceptible to the vulnerability created when someone has a different opinion, value, or viewpoint than we do. This creates easier conversations and more effective communication for everyone, thus creating more acceptance, less judgment, and more openness to those around us. It also helps create a sense of responsibility for our personal role in helping to create a healthy, vibrant, and just society.