The sun is a great source of energy.  The physical sun gives our physical bodies energy directly or indirectly through the food we eat.  The spiritual Sun does the same thing for our spirit and soul.  In fact, without the light of the spiritual sun, our soul would not get the energy it needs to grow.  So we need sunlight from both the spiritual sun and the physical sun.  
    For the past fifteen or twenty years, doctors have been advising people to hide from the sun because it will make them age rapidly and get skin cancer.  In the past five years though, many are changing their minds as new studies show that this philosophy is causing, or making worse, many health problems such as SAD, osteoporosis, and high blood pressure.  Moderate exposure to sunlight is good for our physical body and moderate exposure to spiritual sunlight is good for the soul.  Fortunately, the spiritual light travels with the physical light of the sun.  Unfortunately, most of us do not know how to attune ourselfs to the frequencies of spiritual light so we are able to absorb it.  That is where a spiritual teacher is needed.