It’s important to adopt a critical approach to life and familiarize oneself with skeptical thinking. Stick to the facts. Evaluate claims. Judge for yourself whether the things people say are truly steeped in reason, or if it’s all just wool over your eyes. These mindsets take time and effort to develop, so don’t get discouraged if you don’t become a totally rational, skeptical thinker on day 1.
All that said, there is one thing Bill cannot stress enough though: Do not confuse skepticism with cynicism.