If your mind carries a heavy burden of past, you will experience more of the same. The past perpetuates itself through lack of presence. The quality of your consciousness at this moment is what shapes the future.
There is a fine balance between honoring the past and losing yourself in it. For example, you can acknowledge and learn from mistakes you made, and then move on and refocus on the now. It is called forgiving yourself.
“People don’t realize that now is all there ever is; there is no past or future except as memory or anticipation in your mind.”