When I'm tired, I just don't do anything very well. I lose my patience...quickly. I speak more harshly. I become frustrated and exasperated by almost any little nuisance and I overreact, usually ending up in tears by the time all is said and done.
I know that being tired is a natural part of life. Our bodies need rest to function properly. I also know that I should respond immediately when my body is saying, "GO TO BED!" but I usually don't. I think of "just a few more things to do" while there aren't interruptions and then I've deprived myself of an hour or more of much needed sleep.
Right now, I'd like to be napping, but I can hear little footsteps upstairs that tell me that the small people in my house are not, so I shouldn't either (if I don't want to awaken to some sort of mess).
And so I sit, tapping keys on a computer to offer a little solace, helping me to feel semi-productive while I wait for another opportunity to get some rest.