Spiritual battles are fought at the threshold of your mind not in your mind.

Often times you'll find yourself mulling over difficulties or people or situations that cause you to Fret or worry or be anxious. That God is not giving you an anxious heart, nor spirit of fear; God is giving you a spirit of power, and of love, and the sound mind. (2 Timothy 1:7)

Many times you may become aware of the things your mind is dwelling on, when you get off the phone call or finish a task for start the new task. Then you find your mind going back to the difficulty or the person of the situation is causing you to Fret and be anxious.

However, did you notice that when you're busy doing something else your mind was not addressing the other issue that was difficult, or the person or the situation. It was able to concentrate and fix on the next situation until you completed that task and then it was brought back to that difficulty your person or situation that was causing you to fret or work. This is the battle of the mind.

God stresses through His Word many times to set your mind on spiritual things. He instructs you in Philippians 4:8:

To Think on whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy—meditate on these things.”
(‭‭Philippians‬ ‭4:8‬)‬

In Isaiah 26 the Lord says to you:
I will keep you in perfect peace, Whose mind is stayed on Me, Because you trusts in Me. Trust in the LORD forever, For in YAH, the LORD, is your everlasting strength. (Isaiah ‭26:3-4‬ )

Listen to the Spirit of God speak to you, He gives you the key to winning the battle of the mind. KEEPING YOUR MIND FIXED ON CHRIST.

THE RESULT OF YOUR MIND STAYING ON CHRIST, BEING HEAVENLY DIRECTED INSTEAD OF WORLDLY CONTAINED is:
God guards you and keep you in perfect and constant peace. So, you do not have to fret or have any anxiety about anything. You simply bring every circumstance, you bring every situation, yiu bring every person, you bring every thing that causes you to fret, worry or be anxious to God. And by prayer – talking to him – you make a definite request to Him, for His Help. Confess to him your weakness in handling the situation, the person or circumstance you find yourself.

Acknowledge that you need his wisdom and his understanding and His Grace. Come to Him Who knows what you need before you even ask Him (Matthew 6:8) with thanksgiving, and continue to make your wants and weaknesses known to God.

When you do, Jesus Christ is your Peace, who lives in you; He radiates His Peace in your inner being. And you experience that tranquil state of a soul assured of its salvation through Christ, and so fearing nothing from God and being content with its earthly lot, whatever sort that is, for His peace in you transcends all understanding, garrisons and mounts guard over your heart and mind you being in Christ Jesus.
(Isaiah ‭26:3-4) ‬(‭‭Philippians‬ ‭4:6-7‬)‬

So you, by confessing your weaknesses and committing yourself to the Lord Jesus Christ, by leaning on Him, hoping in Him; you receive His Peace and His Victory at the threshold of your mind.

God Appeals to you and tells you how to win the battle at the threshold of your mind:
Do not be conformed to this world, fashioned after its Appetites, and adapted to its external, superficial customs, but be transformed, Divinely changed by the entire renewal of your mind, to God's thoughts, with His new ideals and His new attitude. (Romans ‭12:2‬)

Again in Colossians 3:2 God says to you:
Set your mind and keep it set on what is above, God’s higher things, not on the things that are on the earth.
‭‭(Colossians‬ ‭3:2‬)‬

God is telling you not to worry or be anxious about the things on the earth, for the earth is he is and all that is within. Here's your good father and he knows the things that you even before you ask Him. (Matthew 6:31-32, 8)

Stop allowing the enemy to keep bringing back to you, those thinks he wants you mulling over, the difficulties he stirred up, or people he is irritating or frustrating you or situations that cause you to Fret or worry or be anxious.

How by being both alert to his scheming and intent to deliberately distract and keep you from interacting with God, hearing from God and being divinely persuading by God.

The Choice is yours, not his!

When you recognize you have a choice about what enters your mind, then you simply Make Christ the Doorkeeper and Sentry over the passage to your mind of what you will mull over, think about and meditate upon.

You have the power to stop the fiery darts the enemy hurls at your mind, with the shield of faith which is the shield of God's Divine persuasion that overcomes the enemies persuasion hurled at you.