Personality can be defined as a dynamic and organized set of characteristics possessed by a person that uniquely influences his or her cognitions, motivations, and behaviors in various situations. The word "personality" originates from the Latin word “persona”, which means mask. Significantly, in the theatre of the ancient Latin-speaking world, the mask was not used as a plot device to disguise the identity of a character, but rather was a convention employed to represent that character. In psychology, personality refers to the pattern of thoughts, feelings and behaviors, consistently exhibited by an individual over a long period of time, that strongly influences the way that individual perceives the world and himself or herself.

Personality may be described as the most characteristic integration of an individual’s structure, modes of behavior attitudes, capacities, abilities, and aptitudes. Most theorists agree that personality is an internal, mental, and emotional pattern of response to the environment - a pattern of thought, feeling, and behavior that affects every aspect of a person’s life. Personality can also be defined in terms of characteristics (traits) of the individual which is directly observable in the behavior. It is quality that makes a person stand out from other; it is whatever makes a person unique.