You can’t change your past. There are many people who can’t move on with their life because they are too stuck in their past. There are many people who can’t do anything with their lives because they can’t let go of their past. Stop trying to focus on multiple things at the same time! Focus on one thing at a time.
There is enough in your past. Forget your past it’s already taken care of. Your future is what you should focus on, so stop looking back. You can’t get anywhere if you keep looking at the rearview mirror. You can’t go forward looking back. Paul said “I forget the things behind, I keep pressing forward.” The world forgets, so move on because age is not waiting for you. Move on with your life. Anytime you concentrate your effort, time, resources, etc, it will eventually succeed.