The consciousness of rightdoing is the best medicine for diseased bodies and minds. The special blessing of God resting upon the receiver is health and strength. One whose mind is quiet and satisfied in God is on the highway to health. To have the consciousness that the eye of the Lord is upon us, and that His ear is open to our prayers, is a satisfaction indeed. To know that we have a never-failing Friend to whom we can confide all the secrets of the soul, is a happiness which words can never express. Those whose moral faculties are clouded by disease are not the ones to rightly represent the Christian life or the beauties of holiness. They are too often in the fire of fanaticism or the water of cold indifference or stolid gloom. CH 628.2
Those who do not feel that it is a religious duty to discipline the mind to dwell upon cheerful subjects, will usually be found at one of two extremes: they will be elated by a continual round of exciting amusements, indulging in frivolous conversation, laughing and joking, or they will be depressed, having great trials and mental conflicts, which they think but few have ever experienced or can understand. These persons may profess Christianity, but they deceive their own souls.... CH 628.3