This is a good point. I've started crying at seemingly really random times in session (or outside of session), and it makes me think "OK, what is triggering me here, what is going on with that?" A particularly random one that I remember from marriage counseling is when I talked about how I was good at math in school (it was relevant somehow), then started crying and said, "I miss math...." And it turned out to be mainly about the fact that math has (for the most part!) clear-cut answers and solutions, unlike life in general. But my seemingly random emotional reaction led to some insight.