Avoiding napping during the day

I usually take an afternoon nap, but lately I've been having trouble going to sleep at night, so today I didn't take my nap and I'm miserable. I have a horrible headache and I'm totally exhausted. I'm going to take a shower pretty soon. I need one anyway, and hopefully it will make me feel better. I have Celebrate Recovery tonight. Hopefully, they don't need someone to fill in with the children tonight, cause I know I couldn't handle that tonight. They are way to exhausting. I start to feel a little like I'm feeling now when I work with the kids. If I do it tonight, someone will have to take me to the ER before the night is over!