After you have studied general semantics.

GENERALLY SPEAKING, you will make applications to sum of two units large groups of problems or situations: those that are essentially personal, and those that you will call professional or relatively impersonal. A word about each of these should help somewhat.

With regard to personal vexed questions it is to be emphasized that above the years you have grown accustomed to your be in possession of behavior and to the clan and the world about you. You have a powerful tendency to take for granted whatever is thoroughly familiar to you. Your notion of what is 'normal' is, therefore, determined largely by dint of the behavior, beliefs, attitudes, customs,