It’s difficult not to follow the patterns of thought you’ve always had or always been exposed to. The only way to discern truths you believe as true is to challenge the way you think and expose yourself to other viewpoints.
To challenge the way you think, you’ll need to empower your inner skeptic. You’ll need to be open to the possibility of discovering that everything you believed to be true about something was false. Your biases may make it hard for you to do that, but they, too should be challenged by exposing yourself to many other points of view and other sources for news and information. Analyze and question what those alternate belief systems claim in the same way you analyze and question your own, always remembering the point isn’t to prove someone is right or wrong, but to discover what is the truth.
Examples of how people and organizations can influence your thoughts: