Mental health and well-being of adolescents is an essential ingredient of a healthy society. In the current era, it is at risk and needed to be reconnoitered well to avoid negative outcomes which may heavily cost not only individual but the whole society. Therefore, it is crucial to explore the understanding level of mental health and well-being among adolescents. Knowledge, attitudes and practices pertinent to mental health, well-being and mental health issues among adolescents have been explored tremendously in current qualitative study. Interpretive phenomenological research design and one to one interview method have been utilized in study. The study sample consisted on (N=25) students (boys=12, girls=13) with the age range of 14-19 years. Interview protocol has been developed on the basis of KAP model.Eight themes along with sub-themes have been generated through reflexive thematic analysis approach. These themes highlight lack of enough knowledge and poor literacy regarding mental health and well-being among adolescents. Lack of formal practices related to mental health care have been observed among them. They have also been found suffering from common mental health issues due to various internal and external causes. Stress of study, uncertainty regarding future, high expectations from parents and teachers have been found as major factors. Additionally, positive attitude has been ascertained towards happiness, as they had been trying to bring happiness in their life through socializing and believed that it was important for them to stay happy. Moreover, they also wanted to participate in mental health training programs as they believed that it would improve their mental health and overcome mental health issues. Hence, preventive measures may be taken in educational settings while considering generated themes of current study.