Pick one of the fragments, and develop it with purpose - from the inside out - into the person you have always desired to be. Let the others just. . . go.
Don't panic or become anxious, you have been blessed with your-self, unique and able to bring wonderful things to this world. There is probably a healing journey that you're on at the moment, and talking to someone about those other parts of self would be helpful. God will help you on this journey, you are not alone in your pain, and you can become integrated again. Give yourself time and patience. It will be ok.