One of the significant aims of individuals is attainment of happiness. However, in the pursuit of happiness, one should not be driven by irrational influences or compromise on social norms and ethics. Psychology helps to improving life quality by applying the concept of rationality in daily life. According to Stanovich, “Rationality involves adaptive reasoning, good judgement and good decision making.”

According to Dr. Albert Ellis, rationality helps a person to successfully attain goals and be happy. He proposed Rational Emotive Behavioural Therapy (REBT), which is a popular intervention method in counselling Psychology.

According to Ellis, rational people possess characteristics such as:

1. Understanding both self-interest and social interest – Rational people understand what choices help them to grow and take responsibility for their actions. They are also careful not to violate other’s rights.

2. Self-direction – The person does not demand excessive attention or support from others as he/she assumes the responsibility for his/her own life. 

3. Tolerance – It is the willingness to accept beliefs and behaviour patterns of others that may differ from our own way of thinking.

 4. Flexibility – Rational people tend to be flexible and unbiased in their thoughts and actions. 

5. Self-acceptance and self-responsibility – A rational person accepts him/herself unconditionally as well as responsibility for his/her thoughts, emotions and behaviour.

The concept of rationality can be explained as: