Have you tried looking for a therapist that specializes in trauma? They can help you process those memories and triggers so they aren't, well, triggering. I have a friend of mine who is doing EMDR (can't remember the acronym right now) and it helps her with her memories of abuse. (Something I need to do for myself since I also have complex PTSD.)

My teens weren't that great either. I got into religion pretty heavy to escape an abusive father and alcoholic mother. I think of things I did then and shudder at times. I think I can work more on giving compassion to myself at that time because that was all I knew--I didn't know anything else like mental illness (though I knew something was wrong with me).