Attributes of peace of mind:

• unusual relaxation of the lower abdomen, from the navel to the groin
• a sense of warmth in the same area
• corresponding relaxation of the diaphragm, enabling exceptionally deep breaths and corresponding relaxation of the whole body
• complete presence — attention to the material here-and-now
• complete acceptance of, or peace with, oneself
• complete acceptance of, or peace with, What Is — the world as it is

When this state occurs, I normally wind up thinking, “This is it.  This is the best.  Everyone should have this.  If there were a gift I could give every human being, this would be it.”