WHO defines mental health as – A state of complete physical, mental and social well being and not merely the absence of disease or infirmity (2001). Definition – A state of emotional and psychological well being in which an individual is able to use his or her cognitive and emotional capabilities function in society, and meet the ordinary demands of everyday life. 9.4.1 : Characteristics of mental health 1. Nothing called perfect mental health – No person is with perfect mental health rather it is optimum mental health. 2. Mental health is a dynamic concept Mental health denotes a state of balance or equilibrium of our mind, this balance is not static, it is quite dynamic. 3. Mental health can’t be achieved without physical health-for achieving an optimal level of mental health one has to first acquire adequate physical health. 4. Mental health and efficiency are not the same thing – One maybe quite efficient and successful at his work or profession but he could be most unhappy, full of anxiety etc. 5. Mental health and social ability are not the same thing- A mentally healthy person is sociable it is not necessary fora sociable or socially adaptable person to be healthy minded. 6. Mental health differs from ethical standards – Morality does not guarantee mental health.