It's 12:56 pm. I'm tired and yet awake. Any suggestions for going to sleep when your entire being rejects the idea?

I would love to go to sleep right now. But for the last two hours, I have been unable to. It’s strange because I’m not worried nor am I ill. It randomly happened. This is the first time.

So, any ideas on how to get asleep within the next hour when the body is unwilling? I just know I’ll regret tomorrow unless I get some shut eye now.