Why, O LORD, do you reject me and hide your face from me? From my youth I have been afflicted and close to death; I have suffered your terrors and am in despair. Your wrath has swept over me; your terrors have destroyed me. All day long they surround me like a flood; they have completely engulfed me. You have taken my companions and loved ones from me; the darkness is my closest friend.

Yikes. Gloom and despair.You notice he says that he was like this from his youth? And yet he still trust's in God, all the time:
 

But I cry to you for help, O LORD; in the morning my prayer comes before you.