Beloved of God, when you are a Christian, it means that you are alive to God. By that, I mean your spirit is alive to God. Your spirit is now one with God. "But the person who is joined to the Lord is one spirit with him." 1 Corinthians 6:17. You are now in the household of God. It is vital to note that it is the spirit of the man that is recreated not his mind. For man is a spirit, he has a soul (where his mind, emotions and thoughts reside) and he lives in a body. The real man is the spirit. So when we got saved, it was our spirit that was recreated, not our minds. This mind needs to be submitted to God, by renewing it with the Word of God. "And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God." Romans 12 vs 2.
God wants us to surrender our minds to Him by speaking and meditating on His words always so we can have a good life here in this world. "This Book of the Law shall not depart from your mouth, but you shall meditate in it day and night, that you may observe to do according to all that is written in it. For then you will make your way prosperous, and then you will have good success." Joshua 1:8. This is what will guarantee us having a good life, void of worry, sin, poverty, sorrow, sadness etc. Let's surrender our minds to God by keeping our hearts continually on His Word. Isaiah 26:3 says, "You will keep in perfect peace all who trust in you, all whose thoughts are
fixed on you!
God bless you!