as a result of insufficient selfobject responsiveness, the substance abuser lacks self-worth and suffers from chronic feelings of poor self-esteem and shame… Structure building cannot occur without a previous stage in which the child’s mirroring, twinship, and idealizing needs have been responded to efficiently.
This passage constitutes the core theoretical claim: self structure deficit in addicts originates in insufficient selfobject responsiveness that prevents the developmental stage of psychological structure formation from occurring.
, Addiction as an Attachment Disorder, 2004thesis