Your prayer against fear and the attacks upon your joy has been heard, and there is hope for one who feels as you do, as one with a dread settled like a vampire upon the soul, dragging down all hope and joy.
The Lord is gracious and says, Deliver him from going down to the Pit, I have found a ransom. Nobody would have thought of that way of deliverance from the pit through a ransom if God had not thought of it, and He has not only invented the way but He has found the ransom Himself, and it is the gift of Divine Love in His Son Jesus Christ. Your salvation, your deliverance from the power of darkness, and your peace of mind lie not in your own feelings or weepings or prayers, but in Jesus Christ and in Jesus Christ alone, whose sacrifice possesses such boundless efficacy that none need fear it will fall short of their need.
Scripture says, He has delivered us from the power of darkness, and deliverance from the power of sin and from the guilt of sin is as much the work of God as any other mercy, and we must look to our heavenly Father altogether and alone for it. What you describe, this fear, anxiety, paranoia and troubled thoughts, would swallow you up, but if all the forces on earth are not sufficient to save His saint, God will send sufficient reserves from the ranks of the heavenly host to preserve His people. He has not given you over. As long as the Father chastens His child He has hope for him, and that which comes even through the malice of the enemy, God in love can use for your good, to keep back your soul from the Pit and your life from perishing.
Hear also the word of the Lord to such as you are, Fear not, thou worm Jacob, I will help thee, saith the Lord. We must labor to get rid of fear, for fear is weakening and fear dishonors God. Shall we doubt the Eternal and distrust the Omnipotent whose arm piled the heavens and sustains the pillars of the earth. Faith in God is the divinest exercise of the mind, to believe in God and His Christ is to be reconciled to Him, and simple faith brings you into unison with Him whom you trust.
So we pray for you now, that the God who keeps back the soul from the Pit would protect the joy and every good thing He has wrought in you, and stop these attacks. In the name of Jesus Christ we ask the Father to remove the spirit of fear, for God has not given us the spirit of fear but of power and of love and of a sound mind, and to lift from you anxiety, paranoia and hallucinations, and all the lies of the enemy that would make you believe what is not true. May He deliver you from the power of darkness that seeks to hide His truth from you, and give you grace to believe Him at all times, to rest upon the ransom found, and to find your life hidden with Christ and free from fear because all your interests are secure in Him.
May you be able to say with the Psalmist, The Lord has chastened me sorely but He has not given me over unto death, I shall not die but live and declare the works of the Lord, and may you be kept in perfect peace as you cast yourself upon your God in Christ, who having made you free, makes you free indeed. Amen.