Are you running on empty?

Are you running on empty ? Yesterday, on the Muscle Testing Workshop one of the students said something, and I started to laugh uncontrollably. I laughed for minutes, it seemed, and could not stop for a long time. I wept more from laughing than most people cry from sadness, lol. I have been observing myself the past two weeks or so, and my joy of life, my satisfaction level, my experience of being alive has been going down steadily with every passing day