Change is dangerous. A person sees so many changes in his life that he gets afraid that one day.. he'll change to a different person. Like the one who had hurt him. He struggles so much to not change and to be the same person as he is today that he hurts himself.
No one can stop change from happening. People change. You do change. Some for the better. Some to test your patience.
You can never run away from it. The least you can do is face it. You may feel all emotions at once but the sooner you embrace these hurdles, the better you'll position yourself to put together all the pieces of puzzle and move on!