Tell about the Lord Jesus Christ with all boldness and without hindrance

Acts 28:16-31
It is because of the hope of Israel that I am bound with this chain.
Paul witnessed to them from morning till evening, explaining about the kingdom of God, and from the Law of Moses and from the Prophets he tried to persuade them about Jesus. Some were convinced by what he said, but others would not believe.
For about two years Paul stayed there in his own rented house and welcomed all who came to see him. He proclaimed the kingdom of God and taught about the Lord Jesus Christ - with all boldness and without hindrance.
What happened after this is not known. Most probably he was released, went to Spain as planned and then back East before further imprisonment and execution in about AD 64-65.
Why?
What happened next is not ended. This story are writing by all Christians to until the end day.
Paul has the capability to be great a man in the world with higher social position, high quality life and rich noble... But Paul chose to follow the command of the Lord, he spent his whole life to serve the Lord, for he forsake the benefit in the world, but try to get the honor in heaven.
Paul accepted the vision from the Lord, which is the truth and light to whole people.
How?
Am I living for my own life? I am ashamed to myself. But I really need the vision and sign from the Lord.