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Therefore, I urge you, brothers, in view of God’s mercy, to offer your bodies as living sacrifices, holy and pleasing to God—this is your spiritual act of worship.
Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is—his good, pleasing and perfect will.
For by the grace given me I say to every one of you: Do not think of yourself more highly than you ought, but rather think of yourself with sober judgment, in accordance with the measure of faith God has given you.
Just as each of us has one body with many members, and these members do not all have the same function, so in Christ we who are many form one body, and each member belongs to all the others.
We have different gifts, according to the grace given us. If a man’s gift is prophesying, let him use it in proportion to his faith.
If it is serving, let him serve; if it is teaching, let him teach; if it is encouraging, let him encourage; if it is contributing to the needs of others, let him give generously; if it is leadership, let him govern diligently; if it is showing mercy, let him do it cheerfully.

GNT … Therefore, I urge you, brothers and sisters, in view of God’s mercy, to offer your bodies as a living sacrifice, holy and pleasing to God—this is your true and proper worship. Do not conform to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is—his good, pleasing and perfect will.

Paul keeps on telling us to stop conforming to the world and transform ourselves by the renewing of our minds, and he would not do so unless we had the power to do so. When we become believers we’re supposed to turn our lives over to God to use for His purpose and begin renewing ourselves.
Renewing ourselves is something we do, not something that’s done to us. It’s part of how we say thanks for our salvation, Paul’s describing something we do for ourselves.