Saint Augustine is quoted with this saying: Pray as though everything depended on God. Work as though everything depended on you.
That would give a good balance between leaving everything to God and having to rely solely on our own effort and resources.
When persecution happened in the early Church, those who had escaped went as far Phoenicia and Cyprus and Antioch.
They would certainly have prayed to God for safety and for direction in what they should do.
They started preaching of Jesus Christ to the Jews, and then to the Greeks, and the Lord helped them, and a great number believed and were converted to the Lord.
So it was not just by their own efforts and faith, or that the people were so receptive to the Good News.
Rather it was by the hand of God and power of the Holy Spirit that the Good News was preached and the people were converted to the Lord.
But God would also want us to be workers in His harvest, just as He wanted the early Christians and people like Barnabas and Saul to carry out the mission of salvation.
So let us carry out the work of God as though everything depended on us.
But let us also pray as though everything depended on God.