Okay so after a few sessions I just got the first verballisable impression of what it is about. DBT improves the behavioral patterns, and schema therapy tries to heal the faulty emotional response patterns that lie below the behavioral misadaptation. Obviously both therapies are useful and can be done in parallel. I'm only not sure if fixing the emotional reaction patterns can fix the core problem of false self and lack of identity. I expect to find myself in anther dead end in a few months. Perhaps meditation will turn out to be the only solution that can nail the core of the problem.