The foundational text of yoga, Patanjali's Yoga Sutras, defines yoga as "yogah citta vrtti nirodhah" — yoga is the cessation of the fluctuations of the mind. When mental activity quiets, true perception becomes possible, allowing understanding of reality's nature.
The Yoga Sutras blend psychology, philosophy, science, ethics, and spirituality. Since yoga fundamentally addresses the mind, it inherently encompasses psychological dimensions.
Practitioners learn to liberate themselves from suffering through psychophysiological discipline, knowledge, attitude, and a healthier way of life.
Yoga isn't exclusively for ascetics but is equally relevant for those living ordinary societal lives. Though ancient, yoga's teachings remain potent and universally applicable today.