Psalm 42:5 Why art thou cast down, O my soul? and why art thou disquieted in me? hope thou in God: for I shall yet praise him for the help of his countenance.
Have you realized that most of your unhappiness in life is due to the fact that you are listening to yourself instead of talking to yourself? Take those thoughts that come to you the moment you wake up in the morning. You have not originated them but they are talking to you, they bring back the problems of yesterday, etc. 
Somebody is talking. Who is talking to you? Your self is talking to you. Now this man’s treatment [in this psalm] was this: instead of allowing this self to talk to him, he starts talking to himself. ‘Why art thou cast down, O my soul?’ he asks. His soul had been depressing him, crushing him. So he stands up and says: ‘Self, listen for moment, I will speak to you.’
… This self of ours has got to be handled. Do not listen to him; turn on him; speak to him; condemn him; upbraid him; exhort him; encourage him; remind him of what you know, instead of listening placidly to him and allowing him to drag you down and depress you. For that is what he will always do if you allow him to be in control. The devil takes hold of self and uses it in order to depress us. We must stand up as this man did and say, ‘Why art thou cast down? Why are thou disquieted within me? Stop being so! Hope though in God, for I shall yet praise Him.’
– Martyn Lloyd-Jones, Spiritual Depression p. 20, 21
Have you ever been deeply hurt, totally ignored by somone you thought was a friend; or worse, even betrayed by them? Just remember, not only does God come very close at such times, but He is also preparing you to help others.
Think about it – who is the best person to help an alcoholic? A former alcoholic, right? Who is the best person to help a widow in their grief? Someone who has read a few books, or someone who has been through the incredible trauma of watching someone they love, slowly ebb away? We all know the answer.
Pour out your heart to the Lord. Let Him come near. Let Him touch you and heal your obvious wounds. Open your heart to the One who works all things, yes, even this, for your good. Allow His word to be your comfort, your strength, your sure guide in the midst of the storm. Let His word be the foundation under your feet when nothing else makes sense.
Read the Psalms. See how men of God, confused and battle weary, poured out their souls to the One who cannot be fully fathomed by human minds. And yet, each found Him to be the rock – the sure thing – perhaps the only sure thing in their lives. They found Him to be a shield, a fortress, a strong tower of refuge and hope. May I encourage you to do the same? As you do, you will know the Author of the word in a dimension unknown to you before. You will know how great a comfort God is; ever faithful and true. Then see what doors He opens up for you to help other hurting people around you.
Precious child of God – just remember, God is a loving Father. I know you know that already. You have heard it thousands of times before, but right now, I believe as the hours slowly drag into days, and those long days roll into weeks, it will not be long before you will know this truth far more deeply than you do right now. He will get you through this.. you really will come out the other side… and when you do, He will have people cross your path who will want to know what got you through the darkest night of the soul. Its called Christian ministry.
Luke 22:31 “Simon, Simon, behold, Satan demanded to have you, that he might sift you like wheat, 32 but I have prayed for you that your faith may not fail. And when you have turned again, strengthen your brothers.”
2 Corinthians 1:3 Blessed be the God and Father of our Lord Jesus Christ, the Father of mercies and God of all comfort, 4 who comforts us in all our affliction, so that we may be able to comfort those who are in any affliction, with the comfort with which we ourselves are comforted by God.