Nothing is working anymore for my depression

I have been battling depression since a teenager. Yes for the first few years, medication helped me. Then I the medicine that I took for so many years that always worked, quit working to help my depression. For years now I have been on a rolls coaster with medications, my family Dr, more than one psychiatrist, and also just came home from a $30,000 mental health residential treatment center. Yes for the 3 weeks I was there I felt better. Although when I came home I immediately felt depressed again. I am currently seeing a new psychiatrist and and counselor weekly. I feel worse and worse everyday and feel like there is no hope for me to get better! I just pray every night for myself and any others who feel the same way as me!!