I know how you feel. I have the same struggle.
You want to know what's weird? Our sessions can often go through both extremes. Like yesterday's. I was all miserable and crazy, but the crying was interpersed with me listening to my therapist talk about her eye infection (via bladder infection

) and me showing her the pictures I took in NYC. One of her homework assignments is for me to pick her up some campaign signs (our politics are similar, and our presidential candidate's campaign precinct is close to where I work.) I talked about how I got to shake his hand one time. We laughed a little over this favorite memory of mine.
I find that it's a compromise between having a totally light-hearted session and having a serious work-out session.