Freshman year in college I lost my final CS1 project three days before it was due. This was back when data fit on floppies; my primary disk suffered environmental exposure damage (I lived in the rowdy wing of my dorm), and my backup coincidentally had been borrowed temporarily and overwritten to make a system boot disk for a broken Mac. I had done about 90% of the project; my only hard copy was about a week old and consisted of about 70% of the project, but about 15% of that iteration had to be ripped out (again) and recoded, and the whole thing needed to be retyped.
We live, we learn. At least it was just a freshman year project.