This article takes an in-depth view of addiction and its’ treatment through the lens of Intersubjective Self Psychology (ISP) and amalgamates ISP’s focus on the trailing and leading edges with the self psychological theory and treatment approach to addiction proposed by Richard Ulman and myself in The Self Psychology of Addiction and Its Treatment: Narcissus in Wonderland (2006). ISP and Narcissus both regard a shared unconscious narcissistic fantasy in the form of selfobject experiences to be at the heart of the treatment process. ISP expands these ideas and, in particular, offers a more complete understanding of the treatment of addiction, first with a focus on the analysis of the trailing and leading edges of both participants in the intersubjective field and then how the unfolding leading edge is the facilitator of psychological growth.