What am I?

Past midnight I went out alone into a windless world of a million stars and utter silence with clouds slowly sailing past a half moon who spread a subtle light.

While I stand there everything changes, I can hear all kinds of rustling in the reeds, splashes in the water, I no longer recognise a familiar landscape. My imagination starts to take over and I see things that are not there.

I listen to my breath and heartbeats. I walk to the bridge and stand gazing up at the sky, the universe, infinity.

Suddenly I feel so utterly humble; what am I?
An insignificant dot in this universe. I am nothing.