The Wellness Approach
Wellness is a state of optimal conditions for normal function… and then some. The wellness approach is to look for underlying causes of any disturbance or disruption (which may or may not be causing symptoms at the time) and make whatever interventions and lifestyle adjustments would optimize the conditions for normal function. That environment encourages natural healing, and minimizes the need for invasive treatment, which should be administered only when absolutely necessary. 
When the body is working properly, it tends to heal effectively, no matter what the condition. When the body heals well and maintains itself well, then there is another level of health that goes beyond "asymptomatic" or "pain-free" which reveals an open-ended opportunity for vitality, vibrant health, and an enhanced experience of life.This is true for mental and emotional health as well as physical health. While some people may suffer psychological disorders, creating an atmosphere of mental and emotional wellness will address all but the most serious problems.
The main difference between wellness care and standard medical care is that wellness care seeks to turn on the natural healing ability. Wellness care does not add something to the system, instead it removes anything that might interfere with normal function. Wellness care trusts that the body would know what to do if nothing were interfering with it. Standard medical care, on the other hand, seeks to treat a symptom by adding something from the outside - a medication, a surgery or procedure.