I work on a locked unit so I catch myself reaching for keys as I open doors in my own house!
I have done the check/credit card "RN" thing (I bet we all have! I mean you only sign your name that way a billion times in just one shift! How could it not become automatic?)
And the kids know... they are prepared... that when they ask me, "Mom, what is diabetes?" or (thanks to TV commercials) "Mom, what's a catheter. What are they talking about?"... they know to grab a pillow and get comfy because it's Teachin' Time. I can't help it, though!
I'm crazy like that!
One last thing, I do hospital corners on my own bed.