IF you feel depressed for an extended period of time (say for more than a few hours, and are frequently like this), you may need professional help and soon. It is a very serious illness and absolutely needs to be treated as such.
Please feel free to talk about it and we will help if at all possible. Talking about your problems can be very therapeutic. Prayer helps also, but a human voice can help you see things in a more reasonable light.
IF your depression causes you loss of sleep, huge changes in moods or suicidal, that is indications of very serious problems, and you really need to seek professional help. You are in our prayers, but it will help you more if you tells us or someone what it is that troubles you.