Proverbs is big on telling us to avoid the lime light. Keeping your mouth shut is a virtue. It is true that in Acts Peter defies the powers that be but it was a special case. He was not being called on the carpet for demanding his rights. He was being told to stop preaching the gospel. There is a difference.
(Act 4:18-20 KJV) And they called them, and commanded them not to speak at all nor teach in the name of Jesus. But Peter and John answered and said unto them, Whether it be right in the sight of God to hearken unto you more than unto God, judge ye. For we cannot but speak the things which we have seen and heard.There are times when it will make the king mad. There are times when it will make your spouse mad. There are times when you go ahead and let them have their mad. There are other times when you keep your opinions to yourself.
So? Pick your battles. Be alert to the difference between witnessing and showing off.