Contentment occupies a contested position across the depth-psychology corpus, appearing simultaneously as a spiritual attainment, a physiological state, a behavioural metric, and a cosmological principle. In the Yogic tradition, as interpreted through Patanjali’s Sutras, santosha (contentment) functions as a niyama — a disciplinary practice whose faithful cultivation yields, according to Vyasa, a happiness surpassing by orders of magnitude any worldly pleasure, the cessation of desire being its ultimate horizon. The I Ching hexagram Yu supplies an entirely different register: contentment here is the dynamic condition of Heaven and Earth acting in compliance with their own natures, a cosmic attunement from which music, social order, and spring thunder all derive. In Stoic sources — Marcus Aurelius as mediated by Hadot — contentment approximates the rational acceptance of one’s allotted portion, an ethical stance actively distinguished from covetousness of time or circumstance. Zhuangzi radically destabilises all three of these frameworks by questioning whether ordinary happiness is happiness at all, and proposing that the highest happiness contains no happiness recognisable as such. In contemporary empirical psychology, contentment is treated as a discrete positive emotion with measurable sympathetic-deactivation signatures, serviceable as a mediator variable in studies of awe, nature exposure, and mindfulness-based smoking cessation. The convergence and friction among these frameworks — cosmic compliance, voluntary discipline, Stoic sufficiency, Daoist inaction, and biometric signal — constitute the term’s generative tension in this corpus.