Expressing your opinions can be a valuable experience. This works best when you have people around you who will argue with you. Theological arguments are of great value if they are done with the right attitude. I have a friend that I am always going head to head with. He has some ideas that I describe with such words as “naive” and “ridiculous”. He feels the same way about what I have to say. So far we have kept on good terms. We keep quoting that verse,
(Pro 27:17 KJV) Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.It works for us. I find that being forced to verbally defend my positions helps me think them through.
Another experience I have had tells me that when we hear our ideas verbalized it often becomes clear how silly they are. Have you been there?
So? Speak but listen. It can be shocking how much we have to learn.