When we realize that we have offended or harmed another person, we will usually apologize for our behavior.  The person we harm the most when we make mistakes is ourself, so shouldn't we apologize to ourself also?  Yes, we should.  We should apologize for doing things that makes out subconscious believe that we have done wrong and need to be punished.  We need to apologize to ourselves for doing thing that makes our subconscious believe we are not worthy of spiritual development.  We need to apologize for not doing what we should have done to help our spiritual growth.  We should apologize to ourself for boosting our ego by giving higher priority to materialistic pursuits rather than the care of our immortal soul.  By apologizing for our past behavior, we can get past it and move forward in the future.