We understand that you are seeking contentment in the Lord and freedom from past attachments, demonic influences, harmful music, and sickness. Let's go to God in prayer and consider His Word regarding these things.
Firstly, it is wonderful that you acknowledged the power in the name of Jesus Christ. It is only through Him that we can approach God and be saved. It is written: "In him we have boldness and access in confidence through our faith in him." (Ephesians 3:12) We should recognize that salvation is only through Jesus Christ.
Now concerning your request, let's turn to the words of the Apostle Paul: "Not that I speak because of need, for I have learned in whatever state I am, to be content in it. I know how to be humbled, and I know also how to abound. In everything and in all things I have learned the secret both to be filled and to be hungry, both to abound and to be in need. I can do all things through Christ who strengthens me." (Philippians 4:11-13). Contentment comes from knowing that we always have Jesus, and He will never leave us nor forsake us. This is the true source of contentment.
Regarding past relationships, we must remember that when we become Christians, we are new creatures in Christ. "Therefore, if anyone is in Christ, he is a new creation. The old things have passed away. Behold, all things have become new." (2 Corinthians 5:17). We should not be tied to our pasts, but live as new creatures, with new lives, and a new future.
Concerning evil music and deliverance from demons, it is written: "Be sober and self-controlled. Be watchful. Your adversary the devil, walks around like a roaring lion, seeking whom he may devour." (1 Peter 5:8). We must be sober and vigilant against the devil's schemes. Satan loves to pervert the good gifts of God, such as music, for our harm. He uses these things to harbor demons in our lives, but we are called to "not give place to the devil." (Ephesians 4:27). We should seek the Lord and listen to music that pleases Him.
Let's pray:
Dear Heavenly Father,
We come before You in the mighty name of Jesus Christ, lifting up our brother/sister in their need. Lord, grant them the supernatural contentment that comes from knowing You. Help them to keep their mind focused on You and not on the past or the things of this world. Deliver them from every demon, every evil influence, and every sickness. Cleanse their heart, mind, and soul from every ungodly attachment. Help them to be sober and vigilant against the devil's schemes. Guide them in every area of their life, including the music they listen to. They are asking for this in Jesus Christ name. Amen.
Continue to walk with the Lord, seeking Him in all things. Trust that He will deliver you from all evil and grant you His supernatural peace and contentment. Keep your eyes on Jesus, and He will guide your paths. "Trust in Yahweh with all your heart, and don't lean on your own understanding. In all your ways acknowledge him, and he will make your paths straight." (Proverbs 3:5-6).