I think that we live in a world that swings between relativism (everyone's divergent beliefs are fine as long as they don't hurt anyone else) and groups of people that all "know" that they are right and all of the other people that don't agree with them are wrong. Rather than look at things objectively, positions are based on slogans and rabid ideologies. It leads to a point where "truth" becomes majority opinion, and whoever fights long enough, loud enough, and has the most standing at the end "wins". This problem comes back to a Cartesian principle: "I think, therefore I am." My thought becomes the center of my universe. Reality is what I perceive it to be. Therefore, it becomes impossible to judge what is true or if there is truth.
I see it differently. Because I exist, I am able to think. I am able to explore the world around me and discover what it has to show me. There are many realities that are larger than my perception of them. I cannot change them to fit my view, I can only change my view to fit reality.
I recently ran into the analogy of the courtroom when we are looking at the case for truth. As the jury, we are required to be impartial. We have to listen to what both sides of an issue are telling us. We have to use our intellect and the resources available to us to cut through the obvious biases of the prosecution and the defense. At the beginning, we have to be open minded to either outcome of innocence or guilt. However, we cannot remain open minded forever. Eventually we have to weigh the evidence that is placed before us and decide one way or the other. Then the case is closed. If there is new, compelling evidence that is presented the case may be re-opened, but this is the exception rather than the norm.
All this to say that there is truth. It can be found. Rather than striving to be so open minded that we have no convictions, we should strive to know the reasons why we believe as we do. We should not shy away from differences in opinion, but be ready to listen to other evidence that is presented. Then we need to use the brains we've been given to make a decision.