Is it peace, or simply the idea of it

My head feels like it's about to explode, so I'm just lying in the dark. I turn over on my side and then freeze, straining my ears to catch if the pattering on the window is rain, or merely the ghost of a song drifting in my mind. No, it's not raining, but birds are chirping. I close my eyes. The moody blue tint that the dark lends to everything disappears, so I resolve to keep them open. The image of me lying in a haze of black and blue, listening to the birds, fills me with an excitement, and I don't know if it is the excitement of acknowledging the experience, or the want to write it down.