There is no getting round it... thinking is a key part of the Christian life. Whatever part of the New Testament you read - sooner or later you read a challenge to change your thinking.
"Since therefore Christ suffered in the flesh, arm yourselves with the same way of thinking, for whoever has suffered in the flesh has ceased from sin..." (1 Peter 4:1)
What's Peter writing about in this verse? He is probably saying something about Christian choices. He is probably saying that Christians learn to think that suffering is better than sinning.
So, if a Christian believer has to make a choice between one thing and another thing... and one of those things is sin without suffering, and the other is suffering without sin... Christians learn to choose suffering over sin.
Why suffering over sin? Because... Christ suffered in the flesh... Christ chose not to sin.
Christians learn to live "no longer for human passions but for the will of God" (1 Peter 4:2)
Christians learn to think like Christ.