To have a good health is the foundation of having a good life. But what does it really mean? One of the best measures I know, is to not have to think about it at all, but just living in flow. Nonetheless, it can be defined as this:
Mental health – how you think and perceive your reality
Emotional health – how you feel and relate to others as well as to yourself
Spiritual health – how you establish a faith and belief system that you strive to incorporate in life
Physical health – how your body functions

Then we can add the aspect of compassion as the glue that makes it all stick together. Nothing will ever become worse if we exercise compassion, but only better. This also encompass Mother Earth. Thus, having green health, is to ensure that what you do, and use, are good both for your own body and self, as well as the environment.