Proverbs 23:7 tells us that “as (a man) thinketh in his heart, so is he.” (KJV) For anything – whether good or bad – to control your life, it must first control your mind and your thought life. Whatever controls your thought life will control all of your life.
That is why the Bible tells us to wage war for the control of our mind.
For though we walk in the flesh, we do not war according to the flesh. For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ… (2 Cor. 10:3-5)
Your mind is the ultimate battleground between good and evil, God and Satan. Whoever controls your mind will control your entire life.
