Did I make a terrible mistake?

So about an hour ago, I started second guessing my decision to turn down this job. I started writing an email to the HR director saying something along the lines of "I apologize for initially turning down the position [...] Would you consider hiring me on a part-time, temporary basis?"

But now just the thought of having a real job again brings anxiety. I'm so sick of thinking about this, talking about this, and living like this. I know that with time, I'll get better and when I'm better, I'll be able to get a good job. I just feel like a job offer with this company will never happen again. I desperately want to work for this company and I hope they know that and I hope that everything will fall into place when I'm ready to move forward.

Now that I'm just babbling, I think it's time to get some sleep. Last night was rough and today wasn't too easy either. So, I'm going to go to bed and be thankful that tomorrow is a new day. The ugliness of this past week has been washed away by the storm and hopefully flowers will start to bloom.