From my reading in Acts 21:18-40 in the One Year New Testament.
God is the one who changes lives!
He deserves the glory and honor for whatever success we achieve in ministry. Paul set a good example of giving God the glory in his ministry report.
“The next day Paul went with us to meet with James, and all the elders of the Jerusalem church were present. After greeting them, Paul gave a detailed account of the things God had accomplished among the Gentiles through his ministry.” Acts 21:19
Paul told about what GOD had accomplished and not what Paul had accomplished.
We should not try and take credit for something that God has done. This is a very important distinction to make for ministry leaders. Now it is important to acknowledge that we do have an important role to play and he does use us.
But we should be quick to celebrate what God has done and not brag about how great we are.