The biggest mistake of Calvinists has been to substitute sovereignty for grace. We do not read about the Gospel of Sovereignty but we do read about the Gospel of Grace.Quoting the words of the Lord Jesus, John 6 stresses both divine sovereignty and human responsibility.
But none of these things move me, neither count I my life dear unto myself, so that I might finish my course with joy, and the ministry, which I have received of the Lord Jesus, to testify the Gospel of the grace of God. (Acts 20:24)
And this Gospel of Grace requires obedience to the Gospel.
Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ. (Acts 20:21)
Both repentance and faith are conscious choices, acts and decisions.