Second Thoughts

In regards to leaving college, I am not ready at all. I thought by this point in my life I would know what I wanted to do, yet even with a degree on the way I am still not sure. For the past four years I thought I knew what I wanted to do when I graduated but now that the time has come I am having second thoughts. With a criminal justice degree I thought that I wanted to do something along the lines of probation however that is not so true anymore... Can't I start over?