Memorize Scriptures. Lay them up in your heart. See Psa. 119:11
“The Bible…is the one supreme source of revelation of the meaning of life, the nature of God and spiritual nature and needs of men. It is the only guide of life which really leads the spirit in the way of peace and salvation.” Woodrow Wilson
Job 22:2 “Can ta man be profitable to God, Though he who is wise may be profitable to himself?