Looking for books where characters deal with morality issues and learn to be better.

Most times people say "morally grey" they end up meaning dark grey (so I guess I'm looking for light grey). I may be an optimist but I often find this unrealistic, I feel like while most people deal with morality issues, majority of the time they also try to do the right thing. One example I really liked is Misaki in Sword of kaigen learning to just be a good mother. I also don't like it too much when the character is always so sure and confident in doing the right thing.