The persona is the individual’s system of adaptation to or the manner one assumes in dealing with the world. Every calling or profession, for example, has its characteristic persona.
In the ancient Greek plays, the actors used a mask to represent their characters. In the present world, we do not use a mask in our day-to-day contacts with others, but we do use, metaphorically speaking, a “mask”; our Persona.
When we relate to the world we use a persona that we identify with. Do you perceive how a doctor relates to his clients in a hospital? How a professor talks to his students? And this mask is frequently carried outside of the office or the classroom. The persona masks the real person, the individual that is behind that mask. When a doctor goes home and relaxes, he may take out the mask. Or he may not. Or he may put another mask: the father, the ruler or the ruled.
The persona is necessary to ease our relationship with the world, but can be harmful if we stick to it all the time and think that it reflects our total personality.