Robyn, I know of the deep empty sadness of which you speak. I know how hard it can be just to face another day, let alone another year. You mentioned about the fear of losing your house and this stress alone could cause the depression that is haunting you now. The worry of being able to pay bills or buy food or gas, has a great many people wondering about how to get by.
In my own life the only thing that has held me together is my belief in God. I take to Him in pray all my troubles and ask for His help in all things. That trust is harder to hold on to when we let ourselves sink into nothingness. But even in darkness you can start my speaking to Him as if He is in the same room with you. Speak out loud, tell Him how you feel and what you need and keep doing that through-out the days until you begin to feel your faith returning. Then let trust in God guide you each day. Continue talking to Him, getting both sorrow and anger out. It is like some say to write it all down in a journal, to get it out of your head and on to paper. But when you trust with all your heart that God is working in your life, that is when the effects of deep deep depression will start to fade away and you will begin to feel normal again. My prayers are with you that all will worrk out in your life. That you will gain strength and joy, peace and laughter, and most of all hope for a brighter future in the coming days.