Behavioral change occupies a pivotal but contested position within the depth-psychology corpus, situated at the intersection of neurobiological determinism, narrative self-construction, motivational theory, and phenomenological transformation. The corpus reveals no single authoritative account; rather, several competing frameworks press upon the term simultaneously. At the neurobiological pole, Kandel demonstrates that behavioral modification is inscribed directly into the synaptic architecture of neural circuits, rendering change a matter of measurable plasticity rather than subjective intention. Lewis extends this argument into addiction, arguing that desire-saturated experience reshapes cortical-striatal connectivity, making behavioral change both a consequence and a cause of altered brain organization. Against this substrate, Miller’s motivational interviewing tradition insists that change is essentially a linguistic and relational achievement: the articulation of change talk within a safe therapeutic relationship generates motivational momentum that observable behavior subsequently follows. Dunlop and Tracy introduce a narrative dimension, demonstrating empirically that the construction of a self-redemptive story precedes and may causally underwrite durable behavioral change among recovering alcoholics. LeDoux complicates the picture by distinguishing explicit cognitive and implicit extinction-based routes to behavioral change in anxiety treatment, warning that self-report alone is an insufficient criterion. What unifies these otherwise disparate voices is the recognition that behavioral change is never merely behavioral — it implicates memory, identity, motivation, narrative coherence, and neural reorganization in irreducibly entangled ways.