I'm sorry Harkas, but you're just as dead wrong about the meaning as cucca. An insomniac is a person who can't sleep and he says he feels like one.
Anyways, the meaning is that he doesn't really want to go to sleep, but he knows he needs to. When he talks about wanting the Earth to turn slowly, he has decided he wants to sleep and the Earth slowly turning would mean that he would be lulled to sleep. The same thing applies when he says "Take me away from here." Finally, the meaning of the fireflies is either the light coming from the crack in the door, or just his eyes being open in general. Get a clue!