There’s a big difference between an opinion and a conviction.
And the difference is this. A conviction is an opinion acted on, regardless of the cost.
Plenty of people have opinions. Opinions are cheap. They don’t cost you anything. But it’s another story with convictions. Having a conviction may cost you everything. Maybe that’s why it sometimes seems very few people actually have many. Some people appear to have none at all!
Martin Luther nailed his convictions to the church door five hundred years ago. It cost him dearly. He suffered untold attack and persecution and was fortunate to have escaped with his life. But Luther and his convictions changed the course of history.