Suffering occupies a pivotal and contested position across the depth-psychological corpus. Far from being merely a symptom to be eliminated, it is theorized as constitutive of consciousness itself, as a threshold to transformation, and as the primordial religious and philosophical problem. Von Franz establishes the correlation between consciousness and the capacity for suffering: the more developed the ego, the more intense and meaning-laden the experience of affliction, rendering suffering ‘a real religious problem’ unique to human existence. Hollis, working within the Jungian tradition, distinguishes authentic from inauthentic suffering, arguing that therapy’s goal is not the abolition of pain but its traversal toward enlarged consciousness. Levine introduces a Buddhist-inflected clinical distinction between suffering and unnecessary suffering, warning against confusing trauma with transformative suffering while simultaneously honouring the cross-traditional understanding of affliction as a doorway to awakening. Epstein reads Buddhist soteriology as fundamentally a psychology of suffering, organizing the Four Noble Truths as a systematic account of narcissistic humiliation and its release. Frank and Levinas together locate suffering at the origin of intersubjectivity—the cry of pain as the founding call to the other. Schopenhauer, via Sharpe and Ure, posits suffering as ontologically necessary to willing itself. Nietzsche identifies the pleasure taken in witnessing suffering as an ‘ancient, mighty, human, all-too-human principle.’ Bryant’s philological excavation of duḥkha grounds the term cosmically in impermanence. Across these traditions, suffering functions simultaneously as diagnostic sign, initiatory ordeal, relational summons, and soteriological datum.