Depression and despair

Anonymous
I am not a believer, but am in a very, very dark place. My mother is my best friend and physically she is declining and becoming very depressed due to her health and the mental and psychological abuse from my dad. I don't live close enough to be able to help her like I would like and financially am not in a place I can move. I'm very depressed, angry, feeling like a failure and completely overwhelmed. I feel so alone and like no one cares that I even exist, except my mom.