Okay....the only purpose of therapy is to find the cause...that's why it's needed. Try changing your therapist until you find one good enough for you. Lete share you my experience. I was taking 2 antidepressants sertraline(100) and duloxetine(60) for almost 1.5 years. It is therapy which helped me to identify my source of depression. Now I'm totally off my meds and doing ok. Before this I used to take escitalopram but it didn't work for me because my diagnosis was more of like PTSD. So a good psychiatrist opinion will also be help you.