We all have history. Some good, some bad and some we probably don't want to think about.
No matter what it is, it is history. It is behind us. We can chose to dwell on it reliving it and never getting past it. That will usually pull us down and keep us from moving on to bigger and better things while realizing our full potential.
A better approach is to learn from it, put it behind us and move on with life. We can learn from every life experience. We can build on those experiences as we become better people. Each of us is endowed by our creator with numerous talents and abilities. It is for us to put them to use.