Most people think of the body as the mechanism which allows us to take physical action, but it is also the container for our mind, emotion, and spirit. It is designed to support us in experiencing the joys of life, but without proper care or guidance, we instead experience fatigue, addictions, and dis-ease. We lack the ability to fully embrace our divine physical selves.
Your body is the starting point from which your life unfolds. Therefore you must have mastery over your own body before you can have mastery over anything else. That means to at least develop a beginning level of mastery over your appetites, requirements, sexual urges, sleep habits, addictions and so on in service to the soul or Higher Self.