Trusting yourself is the opposite of trusting God. If you trust God totally (as you must) you must mistrust yourself. If you trust yourself, you are automatically mistrusting God. Faith is not enough, you also need an act of will. The act of will you need is precisely deciding to trust God fully and mistrust yourself. Modern psychology has lost its bearings when they insist that one must trust oneself. That position is un-Christian.
Only the oppressed can receive liberating visions in wretched places. Only those thinking emerges in the context of the struggle against injustice can see God's freedom breaking into unfree conditions and thus granting power to the powerless to fight here and now for the freedom they know to be theirs in Jesus' cross and resurrection.