Human personality is quite complex and not easy to define. It’s well known that personality is an asset of traits that influence how an individual interacts with other people and with the environmental surroundings. Scientists argue that personality is consistent and sustains over a lifetime. Overall, certain personality traits predict particular life outcomes. However, culture and social group influence some of personality traits. Behaviour can vary dramatically according to the situation. So, understanding your own personality can help you make useful choices in careers and relationships.
Every personality contains a mixture of traits. Many researchers recognize that certain adjectives correlate with those that are related to the descriptions of certain traits. They clustered them into five broad classes of personality characteristics, often called the Big Five. They are Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism. Each of these traits can be measured on a scale from very low to very high. People who are very high in Agreeableness might be described as sympathetic and kind and at the low end – harsh and irritable. The scales do not necessarily correlate: a disagreeable person can be highly conscientious, or a shy person can be open to new experiences. The Big Five are linked to certain kinds of behaviour and certain life outcome.
Personality factors have consistently predicted health outcomes. High Conscientiousness is linked to superior health and longevity. Highly Extroverted people have good social networks, which are correlated with good health, but they are more likely to smoke, to drink excessively, and to have risky sex. Highly Agreeable people are also likely to drink more than average, but at the low, hostile end, they are more prone to cardiovascular disease. People scored high in Neuroticism experience generally worse health than others. For example, they are more likely to suffer from eating disorders, substance abuse, and tinnitus.