Mary Baker Eddy writes in "Science and Health with Key to the Scriptures" (p. 492): "For right reasoning there should be but one fact before the thought, namely, spiritual existence. In reality there is no other existence, since Life cannot be united to its unlikeness, mortality." In this statement our beloved Leader furnishes her followers with a precise guide for determining the correctness of their thinking under all conditions, whether they are in a practitioner's office, at home, or engaged in commercial pursuits.
Spiritual existence, in which God, Mind, controls every idea in harmony and order, is a present divine fact. God's laws are unchanging. They are laws of good, assuring to Mind's creation peace, usefulness, and continuity of satisfying fruition. The claims of mortal mind, on the other hand, whether they be of sickness, accident in the home, or unfavorable economic conditions and discordant personal relations in the office, are alike dream beliefs, without an element of validity, since they are no part of God or of His creation. The individual who bases his thinking or knowing on what is true and relies radically on the Science of true being inevitably finds that the perfection, harmony, and order of God's creation become manifested in and govern his daily experience.
Christian Scientists who are active in business sometimes permit themselves to become so immersed in their daily human affairs that they fail to accord to Christian Science its place of primary importance, at least until after office hours or until a problem of large proportions enters their experience. Even then the tendency may be first to try human methods of solution. Nothing could be more detrimental to spiritual growth and development, as has been experienced by many.