If you do bad can it be fixed by doing good? Is there a ying and yang at work?

Chris and Pete run into the logic of the balance of good an evil, how can I make up for things, and find that maybe they have it all wrong. So what is balance, can we make it make sense? Is fighting for balance a fallacy? Do we accidentally fail? Is this idea of balance rubbish. And if so, why? Is it possible we have got a wrong idea about sin and wrong?