Where is the undo button?

Before I started this newest line of blogging, I decided to start fresh... And rather than start a new blog and have to redo a lot of work. I just deleted all of my past posts rather than ignore their existence...
I'm kinda regretting it now. Now a reader (yes I am pretending I have them) won't be able to read a progression... I doubt the type of stuff I post has changed much though. *ctm* such a life.