Mental health refers to the state of a person's psychological and emotional well-being. It involves the way a person thinks, feels, and behaves, as well as their ability to cope with the normal stresses of life, establish meaningful relationships, and make decisions that enhance their overall quality of life.

Good mental health means being able to experience positive emotions, manage negative ones, and maintain a sense of balance in life. It also involves having the ability to adapt to changes and challenges, and being resilient in the face of adversity.