A fun story on how I lost my end of year project :

Last year was my first year of college in computer science. To get to my school, I need to take two different buses with a kilometer distance between them.
The day that I had to send my end of year project, which was worth 25% of my final grade, I thought that it would be fun to use my skateboard to get to the second bus instead of walking. So, I got out of the bus, started skateboarding towards the second bus and, about 20 meters later, my wheel got stuck on a small rock which was big enough to make me do a front flip. I landed on my back and broke my left arm.
An hour later, at the hospital, I tried to send my project to my computer science teacher but I quickly realised that my spectacular fall destroyed my laptop's HDD and my end of year project.
And this is how I learned how important it is to back up my files in the cloud.