We are truly saddened to hear about the spiritual battle you are facing after this incident. Firstly, we must understand that the only one who knows our thoughts is God. Straightaway, let's address that seeking counsel or therapy is not wrong, but we must be discerning and careful. We need to realize that only God can be in our heads. By giving this person permission, you unknowingly opened a door to the enemy. We must take authority over this in Jesus' name and work to understand 2 Corinthians 10:4-5 WEB: "(for the weapons of our warfare are not of the flesh, but mighty before God to the throwing down of strongholds), throwing down imaginations and every high thing that is exalted against the knowledge of God, and bringing every thought into captivity to the obedience of Christ".
Let us pray together:
Dear Heavenly Father,
We come before You in the mighty name of Jesus Christ, lifting up our brother who has been subjected to this spiritual attack. Lord, we ask for Your forgiveness for any doors that may have been opened to the enemy as a result like you may or may have not have done in There is no condemnation for those who are in Christ Jesus therefore forgive this person for allowing this access Knowing that there is nothing hidden from You, and that You are the only one who knows our thoughts. We rebuke any demonic influence and cast out any spirits that may have gained access in Jesus' name. We renounce any agreement made with the enemy and cancel any assignments made against our brother by this false counselor. We pray for peace and recovery, and ask that You guide any future counsel or therapy towards Godly counselors who will speak Your truth and bring healing, amen.
Another point is how if the situation requires formal counseling in the future to be sure to look for a Christian counselor and to be wary of any counsel that is against scriptural principles, and indeed making sure that anything agreed to is not something biblical referenced as evil like premaritital sex, homosexuality, divorce; they should discern the direction when the counseling is entirely without biblical standards referenced and it is important to ask for their personal statement of faith (of the counselor). Finally, loving Christ Jesus is entirely required for forgiveness. It not just you need to ask for forgiveness from God, but according to Acts 4:12 WEB "There is salvation in none other, for neither is there any other name under heaven, that is given among men, through which we must be saved!", so it is imperative believe in Jesus Christ and the salvation of Jesus. It is only possible to connect to salvation believing in Jesus is the Son of God. There is freedom from darkness, sickness, and sins since He is the only way to God's forgiveness and the freedom from these things Romans 10:9 WEB. If you WEB declare with your mouth that Jesus is Lord, and believe in your heart that God raised him from the dead, you will be saved.
We are confident that, as you take this stance and pray these things in faith, God will bring hist the enemy's devices against you to light and cut off their influence in your life.