You probably don't want to hear this, but I never started moving even closely toward getting better until I sobered up. I know how it really does feel like the self-medication works, but for me it just masked everything. I had to work on both problems, substances and mental health at the same time. There is a workbook, called seeking safety, which really helped me. Most substance recovery stuff made me roll my eyes but this one really helped. Its geared toward women who have PTSD and substance abuse issues...

Have you been up front about how you feel the treatments aren't working. The ECT wrecked me, the meds never seemed to do much except dull me, but I may try again with the meds. Other things like DBT have been more helpful for me.