@NatashaSharma
Yes, and as we are all different, we are all bound to think of it differently.
Indeed, some people do use the past to learn from their mistakes, and by others dwelling on their past, they never get over it. They end up living in the past, and never waking up to see the world for how it is.. And agreed, some bad guys do become good. But something, something changes them. Whatever did would have had to have been a powerful thought, emotion, scene, else they would have never changed.. True, sometimes having to see all that hurt, will stop them, make them a better person. This is because of their conscience. They realize that that is wrong, and change. While others hurt and kill with no remorse what so ever. In that case, most times you can look back at their past and understand why they are the way they are.. People always have a bit of good. That is why they can be swayed.. There is something that would make them realize that it is bad, had they been presented with that opportunity. And that's a great motto xD