On any given subject, I think it would be fair to say that people generally think their conclusions are right more than not. As a result, most think they see more clearly than others, at least more clearly than those that disagree with them. Absent of confusion, we believe we see clearly, and if there is a disagreement, that we see more clearly than others.
All Christians should have a growing ability to discern, just like all should be growing in evangelism, helping and generosity. Having discernment though is not the same as having thoughtful convictions nor is it the same as having the gift of discernment. One can be convinced of something and not have discerned anything.
There are those who think they have the gift of discernment but actually just have a conviction that they are right about most everything. They don’t have discernment, they have pride. In truth, they discern little.
In its simplest definition, discernment is nothing more than the ability to decide between truth and error, right and wrong. It is the process of making careful distinctions in our thinking about truth. The gift of discernment often goes beyond that though and sees the source behind a word, deed or appearance: it determines if the thing in question is of the Holy Spirit, a mere natural imitation of the Spirit or a demonic counterfeit.
Out of all the gifts, I think this is one of the trickiest gifts to identify. The reason is because we all (should) have it to some degree and (here’s why it is tricky), we all think we have it more than others do. Crazy thing is, I think one needs to have the gift of discernment to even know if they have the gift of discernment.