Autosafe ... Autosafe your best Friend....
.....

....I feel you ... best of luck .....
Well, I've already recovered the manuscripts and brought it to my current standard (similar to the ones lost). For that, I simply copied and paste the chapters I have online and edited it (this is the hardest part, really).
For my other two stories, I still haven't copied them, though I plan to later on, after I completed my main project.
The most painful here are the illustrations. I lost sets of my illustrations' PSD files, that I was left with non-editable JPEG files. Hence, I made new covers. Good thing I'm still using the traditional pen-and-paper art drawing technique, so I got my linearts backed up physically. I also took the opportunity to improve on my coloring, that's why...
Sample:
From here...
to here...
And from here...
...to here.
I haven't mentioned I also lost back ups of all my old files, including old drawings, old game installers, and pictures of when I was still a teacher in my first school.