Help!I'm depressed

A small book helping people who are experiencing depression. Troubling thoughts flood my mind. I lie in bed alone, beseeching God on behalf of my three children. The tears come as I wonder why the Lord seems so far away and why prayers remain unanswered. Life seems so unfair. Why is it so hard? In the depths of despair I know I have a choice to make. Am I going to allow these feelings to destroy me?