What stories are you telling yourself? What stories are you listening to? What stories are you believing? Are you convinced that you are better than you really are? Are you convinced that you are worse than you really are? These are all questions we must evaluate at some point in our lives, because the narrative affects our lives more than we realize. They will sway you to arrogance, to self-defeat, to depression, to misery if you allow the script to take over. This really does make the atmosphere that you build for yourself—the people you interact with, the life you live, the things you tell yourself, the things that others tell you—that much more important.
That said, I do think it’s important to clean the slate sometimes and start as fresh as you can. Of course, we will alway grab hold of some past ideologies that are nearly impossible to shake, but those that you can let go of, try setting them aside, looking into why you believe the things that you believe, and then, adopt them again later if they are true and if they fit you.