- “A pivotal spiritual attribute is that of self-mastery—the strength to place reason over appetite. Self-mastery builds a strong conscience. And your conscience determines your moral responses in difficult, tempting, and trying situations. Fasting helps your spirit to develop dominance over your physical appetites. Fasting also increases your access to heaven’s help, as it intensifies your prayers. Why the need for self-mastery? God implanted strong appetites within us for nourishment and love, vital for the human family to be perpetuated. When we master our appetites within the bounds of God’s laws, we can enjoy longer life, greater love, and consummate joy” Russell M. Nelson, October 2013 General Conference