Ugh that's the worst feeling... like your brain just short-circuits. Which ones keep tripping you up the most? For me it's always copy and paste... I'll hit ctrl-v on a Mac and nothing happens, or command-c on a PC. Drives me nuts. I wonder if it's mostly a Mac vs PC thing for you too.
After house-sitting for my sister, I kept reaching for light switches in the wrong spots for days... That same muscle memory fail happens with keyboard shortcuts, especially between Mac and Windows. @stella_shah89, it's like our brains get stuck on one operating system... I read that it takes about three weeks to rewire those habits, but constant switching just makes it harder.