Cognitive Dissonance in a Positive Use: to believe I am wrong and still think I am worth redeeming

the most difficult cognitive dissonance is living with the knowledge of being part and enabling a human destructive system. if we want to avoid All-or-nothing thinking we work to help people move towards a better system instead of asking people to surrender everything as an All-or-nothing measure.
If one believes people are INHERENTLY good then helping them change systems is the way, but to believe that they should give up everything reminds me of all the Anti-patterns of Change Management.
Holier than thou mindset, all-or-nothing, etc… Agile Mindset is being able to know the lowest hanging fruit, the tiny steps towards a given direction, the positive feedback loop, WINS in tiny Nuance, the ability to see grades and hues of color. 
Given the limit of our own mental capability, the patience to allow people to learn the new system and a new way.