It's one thing to read these words and even agree with them, but it's quite another to put them into practice. But Paul assures us that this process--and it-is-a process- of renewing our minds comes from creating a habit of it. We can be guaranteed that we will not be able to do these things if we do not start from the correct place and practice it daily. It simply will not happen. We might be able to stop telling lies, we might be able to stop stealing if that's what we did before Christ, we might be able to control our tongues some of the time but not always and unfortunately, we will never come to a place in this life where we will no longer grieve the Holy Spirit. So is Paul pushing us to seek something we cannot attain- No.