This article examines the science and philosophy of happiness — synthesising positive psychology research (Seligman's PERMA model, Lyubomirsky on sustainable happiness, Kahneman's experiencing vs remembering self), neuroscience of hedonic adaptation, and the ancient frameworks of Aristotle's Eudaimonia, the Vedantic concept of Ananda, and the Buddhist understanding of Sukha. Seven common misconceptions about happiness are identified and corrected: the belief that happiness is a feeling rather than a quality of life; that more money produces more happiness above a sufficiency threshold; that pleasure and happiness are equivalent; that happiness is a destination rather than a practice; that comparison-based satisfaction is achievable; that happiness requires special circumstances; and that happiness is primarily an individual achievement. The convergence between ancient wisdom traditions and contemporary happiness research is documented as independent verification of the same fundamental insights.