One part of the body needs every other part of the body for the body to function at its best. Where there is unity, there is strength and harmony. If you have ever heard an orchestra tuning up before a concert, every sound is dissonant and out of harmony. However, once the director takes the platform and gives the signal, all instruments and musicians in their respective roles and places bring forth the most harmonious sounds. Each person is responsible for their domain, but they must also know their role in the orchestra.
In any musical arena, or any arena in life, harmony is achieved when the individuals, or individual parts, work in timing with everyone else or every other part. Although soloists and solo pieces highlight an instrument, sound, or individual, apart from the orchestra and the audience they would only be like a lone voice singing in a shower. If we look at our physical, mental, spiritual, financial, and social health as an orchestral concert, perhaps we can see how disharmony and disunity create sickness.
If you take care of your feet, your feet will support your legs better. If you take care of your finances and resources, they will take care of you and others. When we discipline ourselves to see ourselves as important players in an orchestra on the stage of life, we realize that we cannot afford to be sick or out of place, because our sickness affects the entire orchestra, and we cannot afford to leave others sick because our health is dependent upon their health. If we train well, remember that we are part of a whole, tune up each day, and always follow the directions of the Director, we will begin to function like well-oiled machines interacting with and within well-oiled machines.