The human trait of self forgiveness, while NOT being willing to forgive others always astounds me every time I see it. Freud would probably see it as the ego's method of self preservation, I suppose. The Bible also remarks on it:
"And why beholdest thou the mote that is in thy brother's eye, but considerest not the beam that is in thine own eye?"
It's a trait we are all born with, and something we all have to work at controlling.
The ego is only the part of you who knows who you are. Forgiveness of others is a challenge for me in some cases, since while I know it's necessity, I also feel that by forgiving there is a sense of 'forgetting'. I think that is the major blockage here in that it is wise to forgive, yet unwise to forget - and yet often we are told that they must go together.
All the programs and conditioning we are born with can be healed, balanced and evolved with intention to do so and dedication. :)