The present study examined the relationship between perceived stress, sleep quality, life satisfaction, and happiness among young adults. Happiness is considered an important aspect of psychological well-being and is influenced by various emotional and behavioral factors. Young adults, especially university students, often face academic pressure, emotional stress, irregular sleep patterns, and social challenges, which may negatively affect their mental health and overall happiness.

The study used a quantitative correlational research design. A sample of 50 university students aged between 18–25 years was selected through convenience sampling. Data were collected using Google Forms and standardized psychological tools, namely the Perceived Stress Scale (PSS), Pittsburgh Sleep Quality Index (PSQI), Satisfaction With Life Scale (SWLS), and Oxford Happiness Questionnaire (OHQ). Mean, standard deviation, and Pearson correlation were used for statistical analysis.

The findings revealed that perceived stress had a negative relationship with happiness, sleep quality, and life satisfaction. Sleep quality showed a positive relationship with happiness, while life satisfaction demonstrated the strongest positive relationship with happiness. The results suggest that higher stress levels reduce emotional well-being, whereas better sleep quality and greater life satisfaction contribute positively to happiness among young adults.

The study highlights the importance of stress management, healthy sleep habits, and improving life satisfaction to enhance psychological well-being and happiness among young adults. The aim of the study was to examine the relationship between perceived stress, sleep quality, life satisfaction, and happiness among young adults.