Throughout your life, watch over your heart and notice those things that hinder its union with God. Let this be your sciences of sciences and with God’s help, you will get accustomed to perceiving quickly what distances you from God and what draws you nearer to Him. The Deceiver strives very hard to stand between our heart and God. It is precisely he who distances us from God with various passions: carnal lust of the body, lust through the eyes and earthly pride.
Distinguish between the Life-giving Spirit and the spirit of death within yourself. When your soul has good thoughts, you feel good and buoyant, you experience tranquility and joy, this indicates that the Holy Spirit is in you. Whereas when you have unkind thoughts or unkind inclinations of the heart, you feel burdened and troubled. This indicates that the evil spirit is within you. The evil spirit is the spirit of doubt, disbelief, passion, constriction, sorrow, and confusion; whereas the righteous spirit is the spirit of unshakable faith, the spirit of benevolence, the spirit of noetic freedom and expanse, the spirit of peace and joy. Through these indicators, ascertain what spirit is active within you.