The Act of Forgiving

Forgiveness is the act of pardoning someone for something stupid they have done. A huge issue with every person on earth when coming in contact with forgiveness is the person thinks its okay to do something bad, then come back later and thinking "im sorry" will dig them out of it. One fault of mine is I don't think everyone should be forgiven. An example is a con artist swindling elderly people out of their life savings. The con artist was sane, he knew what he was doing at the moment to the old people and their future. He did this to better himself in life. I know Christ and the Bible tells us to forgive everyone. I know should do this, but it's so much easier said or to give advice on than to do.