Aaagh!

I diverged from my usual practice of writing my fiction in longhand and then transferring it to the computer, and now I'm regretting that decision. 
My computer hiccupped (something to do with battery problems) and caused me to lose over 1,500 words from the story I'm working on right now. That means the work of an entire writing session (one I was very pleased with, by the way) lost. 
I'm pretty upset, to say the least, and a bit depressed by it all, but I'm trying to make the best of it. 
I'm recreating what I can remember from my notes and hopefully the scene I rewrite from memory will be even better than the one I originally wrote. 
I've learned my lesson, anyway. Backup any digital work.