The solution to this is to have confident humility. You should have confidence that you will achieve your goals but have humility to question whether you have the right tools at the present. That is the sweet spot of confidence between the two extremes of arrogrance and self-doubt.

The author says, we are entiteled to have our opinion. Yes, as long as they are inside our head. But if we decide to express it outside, then it is our responsibility to ground them in logic and facts, and change our minds when better evidence turns up.

So what happens when we express our thoughts and find them to be different from others? The author says that task conflicts are good. That is how we grow. However, relation conflicts are not. We should keep emotions out of our feedback or reaction. We should argue like scientists instead of resorting to name calling. We should concentrate on how something should work rather than why it should.