Breaking Out

Why do I keep going back to the past? I thought all of my fears had been cast. I think too much about life and such. My desires and fears are holding me back. I feel like my head is going to crack. Why don't I just move ahead? Cause I'm petrified and move back instead. Too much thinking makes me go crazy. My head is getting a little hazy. I need to move past this stage. I want to break out of this cage.