It is as simple as this!... Mark 1:15, "...repent and believe in the gospel."
In other words: "Change the way you are thinking now, turn away from that thinking and turn towards a new way of thinking...to believing in the gospel."
Realize though that this is not a "work" you can do in your own strength and ability.
Kind of goes like this too !!
Galatians 5:16 and Romans 12:2 and 2 Corinthians 10:4-5 for starters
You start with this.........
Romans 12:2 ....
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
SO you CAN LIVE LIKE THIS
Galatians 5:16
This I say then, Walk in the Spirit, and ye shall not fulfill the lust of the flesh
But you NEED TO DO THIS AS WELL
2 Corinthians 10:4-5
4... For the weapons of our warfare are not carnal, but mighty through God to pulling down strong holds
5... 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.
This is how I keep my oil full and my wick trimmed and my flame bright
All done through the Grace of God who maketh all grace abound to me.
Blessings and love in Christ ( 2 Corinthians 9:8 )
JIM