“Even when it acts against our best interest our tendency is to be consistent with our prior commitments, ideas, thoughts, words, and actions. As a byproduct of confirmation bias, we rarely seek disconfirming evidence of what we believe. This, after all, makes it easier to maintain our positive self-image.
Part of the reason this happens is our desire to appear and feel like we’re right. We also want to show people our conviction. This shouldn’t come as a surprise. Society values consistency and conviction even when it is wrong.
We associate consistency with intellectual and personal strength, rationality, honesty, and stability. On the other hand, the person who is perceived as inconsistent is also seen as confused, two-faced, even mentally ill in certain extreme circumstances.” – Farnam Street
Source:
James Clear Mental Models Overview