Is it possible for a morally depraved person to become a good human being?

In my opinion is all about how people are educated and how they allowed to be educated by others. A bad person with bad habits can change in life. While it will take a long time to change completely eventually we can see a good result. Sadly not all bad people have the patients to change and eventually they return to their old habits. Religion do help this kind a people to make a drastic change because if they really care that god, the deity that can give them salvation and eternal life, is seeing every move that they do they will force themselves to stop. Is possible but not easy and will not happen instantly but as an ex christian, I seen lots of "gangsters" and people from the street make a positive change in their life.