I gauge my good-day-ometer by how many traffic lights I hit on my morning commute to work. Today, I hit 23 out of 25 RED lights and so far so good. I just know it'll turn hellish hours before quitting time though.
Every day is a good day, unless something really crappy happens. It takes something significant to happen to ruin my day. Its 75, sunny, dry and Im going riding right after work, so its going to take a lot to ruin this day.