You can get a fresh start when you are working on changing what was in your past, how you interact with it, and how things around you have changed. You must spend some time letting go of all the things that will change you, and you must remember that those people and experiences are not good for you.
You will notice that it is much easier for you to change the way in which you are living, and you will avoid situations that are bad for you. It is much easier for you to change your life when you have taught yourself to let go, and you will feel as though you have a fresh start that is not tainted by the past.