Quality of life refers to the overall well-being and satisfaction that an individual experiences in various aspects of their life, including physical health, mental health, social relationships, and overall happiness. It is a subjective measure that can vary greatly from person to person, but generally encompasses factors such as access to healthcare, financial stability, work-life balance, and personal fulfillment. Ultimately, quality of life is about feeling content, fulfilled, and happy in one's day-to-day existence.