By means of prayer you can win the Grace of God; prayer saves you from slavery to the senses; when you extol God and feel that you are activated by His Will, you will become free from anger, anxiety, prejudice and envy; these passions ruin physical and mental health. Whenever you feel greed or resentment, try to control the emotion. Treat it as you would treat an illness; find the cure and master it.
(SSS Vol XII – Chap 13)