You need to believe that you can always get to the truth about something. It is crucial because you want to ensure that you establish an attitude that allows you to get to the reality and context of an issue when you are in that headspace.
Most people believe that lawyers only are interested in winning cases on behalf of their clients. However, this is not the reality. Lawyers are looking for an honest explanation for the circumstances in which they work. Lawyers present the most convincing defense for their clients. However, not necessarily means that they will lie about anything. They simply present all the available evidence, and let the jury make a decision on the truth.
Given all of this It is imperative that you start to change the way you see global situations. It could be worth your while to find the appropriate place to reflect in that manner.