The philosophy of happiness explores what it means to live a fulfilled and content life. Different schools of thought offer varied perspectives: **Aristotle** believed happiness (eudaimonia) comes from living a virtuous life and fulfilling one’s potential, while **Epicurus** emphasized simple pleasures and the absence of pain as the path to happiness. **Utilitarianism**, championed by **John Stuart Mill**, defines happiness as the greatest good for the greatest number, focusing on collective well-being. **Existentialists**, like **Sartre**, suggest that happiness is subjective, achieved through personal freedom and authentic choices. Ultimately, happiness philosophy examines how external factors, mindset, and actions shape well-being.