First of all, never say that nobody knows, simply that you yourself have no idea. Second of all, the physical body is nothing more than a vessel, a vehical for the spirit and the soul. The same way you get into a car is the same way your spirit and soul are with the physical body. When ones physical body dies, they return to the spirit world, a "ghost" of sort. If they give their soul unto another being, that means that they are trusting that being with their soul, to watch over it and protect it, but none of them are what religions portray them to be, as religions are built by mankind, not by a higher being itself. In my walk I have learned self-empowerment, as we are all spirits, Gods and Goddesses are no different, the only difference is knowledge and understanding. So my advice to you would be this, know that as depressed as one can become, life is filled with sorrow and despair, however if you have the will to overcome your own obstructions, then you can succeed and rise without anyone or anything else but your own mind and your own will. I too have become dangerously depressed at different times, and whenever that happens I simply say that I shall not allow the thing I hate the most, life, to overcome me, and I shall triumph over it by beating it at its own game. Best of wishes to you.