Finally, believers, whatever is true, whatever is honorable and worthy of respect, whatever is right and confirmed by God’s word, whatever is pure and wholesome, whatever is lovely and brings peace, whatever is admirable and of good repute; if there is any excellence, if there is anything worthy of praise, think continually on these things [center your mind on them, and implant them in your heart].
Our minds and what we focus on is so very important. Our thoughts and what we believe to be true will drive the way we live our lives. Those who believe that the world and its standards are worth pursuing will spend their lives sacrificing for things that have no eternal value. In the end it will ultimately lead to destruction but to them they believe it is worth pursuing.
As believers in Jesus Christ we are set free from the power and authority of Satan. Satan no longer has authority over our lives and we are completely free. But throughout our lives Satan will try to assault our minds with his lies and deceptions. This is why our hearts and minds must be set upon things above. This is why in the book of Romans the apostle Paul writes about being transformed by the renewing of our minds.
Our minds dictate the way we live our lives because every decision we make is made in our minds. The way we make decisions is shaped by what we sow into our lives. If we continually sow the things of the flesh into our lives the decisions we make will be in pursuit of these desires and will ultimately lead to destruction. But if we sow into our lives the things of the Spirit we will reap eternal life because the decisions we make on a daily basis will align with the leading and guidance of the Holy Spirit.