"When we realize a constant enemy of the soul abides within us, what diligence and watchfulness we should have! How woeful is the sloth and negligence then of so many who live blind and asleep to this reality of sin. There is an exceeding efficacy and power in the indwelling sin of believers, for it constantly inclines itself towards evil. We need to be awake, then, if our hearts would know the ways of God. Our enemy is not only upon us, as it was with Samson, but it is also in us." - John Owen
Here's my approach to walking in the Spirit.
“Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;” (2 Corinthians 10:5) (KJV 1900)
We censor every impure thought or imagination. And change the channel in our thinking on any thought that does not conform to obedience to Christ.
And we replace it with:
“Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.” (Philippians 4:8)
Knowing Jesus is God and God is love, Jesus is Lord of our lives when love rules our thoughts and actions.