I don't why it but I always seem to have an awful comedown after feeling good. Whenever I have a good day/night/week, I can be sure to have an equally awful mood strike me soon thereafter. Maybe it's the inevitable swing back to normalcy and something in my head overshoots the mark. It really does feel like a drug comedown. Maybe it is a hormonal comedown - you know all the talk about feel-good-hormones raging around in your head sometimes. I'm not sure. I all I know is it feels like there's a ton of bricks on my chest and I'm listening to "pet sounds" over and over.