What you speak of is familiar to many. You are depressed about being depressed. To feel better, I first have recognize the rut I am in. My focus is on the woe-is-me and not on what I can do to function at a higher level.
A major problem for me is isolation. One article states, "Isolation is a 'cancer' for the recovering person's soul
." More and research informs us of the necessity of have good relationships. I live near a hospice. Every now and then, I go there to walk the halls and say hello to people.
Walking for me is better than any pill. The champion questions help:
http://www.school-for-champions.com/life/5questions.htm
One of my therapists would ask me to describe the life I envision for myself. He asked about values. What are the important things I want to be part of my life. He stressed we have to make our lives work. No one is going to hand us one.
Sadly, I did not get to where I wanted to be. Yet, my life is better. For that I am grateful.
Be well.