Knowing refers to conscience, and action refers to practice. The combination of knowledge and action refers to the unity of internal knowledge and action, so that there is knowledge in action, and action in knowledge, and knowledge should govern action.
Thoughts refer to the entire system of thinking and changes refer to responding to situation in an appropriate manner. Together it means that we should apply our thoughts when responding appropriately to situations.
The mind is the consciousness of the body, while the body is the medium through which the mind can act. The mind and body should work together in harmony as a single integrated entity.
Happiness usually refers to a state of mind in which people feel a peace about their circumstances and lives. At Orenda, we strive to help other achieve happiness by creating dream settlements for health and happiness enhancement.