Don't fight it

It seemed inevitable that it would happen. I mean, there were only so many weeks that I could go feeling good about myself. Somehow, some niggling pebble disturbed the calm waters. I have to admit that it's nothing to do with the way I look though. So, there is some consolation in this. It's just an inexplicable sadness that's really bearing down heavily on me. Actually, I'm sure I could explain it if I wanted to. If I dug deep enough, and thought about it, there has to be an explanation for this.

Can someone please tell me though? I'm a little exhausted right now.