Did I make a mistake?

I can't stand second guessing my decisions.  I don't know how many times this question has gone through my head in the past few weeks.

Did I make a mistake?  Did I give up everything I wanted to begin with for something I thought I did?  Can I go back?  Do I want to go back?  Is this just the fear of moving forward that's paralyzing me?

I know what I don't want in my life, everything I gave up to move forward, to be here.  I don't know why I'm having such a hard time though.