Sometimes the depression that we experience as a result of a seemingly impossible situation is related to a wrong concept of God. In Psalm 13:1-2 David wrote; "How long, O Lord? Will you forget me forever? How long will you hide your face from me? ...How long will my enemy triumph over me?" Had God really forgotten David? Of course not! David just had a wrong concept of God and felt that He had abandoned him to the enemy. He lost his focus because he believed a lie about God and because his situation seemed hopeless, that hopelessness became the basis for his depression.
But David didn't stay in the dumps. He realized that he was a child of God and decided to focus on what he knew about God and not on his negative feelings. Out of his depression he wrote; "I trust in your unfailing love; my heart rejoices in your salvation" (Psalm 13:5). In that same Psalm he made a positive expression of his will: "I will sing to the Lord, for he has been good to me" (verse 6).. He made a willful choice to move away from his wrong concept, which was causing his depression, and returned to the source of his hope.
If Satan can destroy your belief in God, you will lose your source of hope. But with God, all things are possible. He is the source of all hope and you need to learn to respond to what appears to be hopeless situations the way David did; "Why are you downcast, O my soul? Why so disturbed within me? Put your hope in God, for I will yet praise him, my Savior and my God" (Psalm 43:5).
If Satan can't destroy your concept of God, then he will try to destroy your concept of who you are as a child of God. He can't do anything about your position in Christ, but if he can get you to believe it's not true, you will live as if it's not, even though it is. The two most important beliefs you possess are who God is and who you are as His child.