Sins chapter 3

If i have a magic power, i would like to turn back to my past. My past taught me to become a strong person. And not like now. I'm traped with my own world. How it could be? I keep asking to myself for many times but i couldn't get through the answer. What's happen to me right now? This thing happen to me since i enter the secondary school and start my life as a teenage girl. I'm just lost in my own life. I forget who i am. What really happen to me? Can someone told me? I really need the answer.