My mind feels disordered.

I feel like I'm hyperactive and my mind is racing but it's not racing anywhere. I feel like I have a song stuck in my head that someone else is whistling which I want to stop. I feel like something is wrong, but I don't know what. I feel like I should be doing something, but I don't what to do.

I just want to feel calm, and relaxed, but I cannot. It's like a runaway train that I can only briefly slow down.