Oh no! My NOOK stopped working!

I was reading my NOOK in bed this morning, when it suddenly froze and the screen went blank--not completely off, just a blue-ish tinge. I was SO upset--I have something like 75 books on it plus numerous games, email, word processing and other apps. Luckily I found a tip on a Barnes and Noble users forum and got it to start working again. But now I realize how dependent I have become on this electronic book device--and two years ago, I swore I would never use one! There is much to be said for reading old-fashioned books. . .