Foregoing your past and living anew is easier said than done, particularly for some who have experienced significant pain. But coming out of significant pain is a good thing especially when you have a bright future ahead of you.
I believe that one way of viewing past hurts is looking at what you have learned from your past experiences that you can bring to your current and future life. For example, if you have been accustomed to being taken advantaged of, look at the key signs for this behavior and do not be a victim again.
A second way of looking at your past is having the opportunity to become a new person in Christ and to be awakened to everything God has for you. Your past can never hold you hostage because you have obtained your freedom in Christ (Gal 5:1).
Thirdly, understand that because of your past, you have opportunities to help others in similar situations, since all things work together for good to those who love God and who are called to his purpose (Rom 8:28).