Now first off I have a great deal of mood swings. I'm happy, and 30 seconds later I'm in tears. But I was coming home from a doctor appointment the other day and I just felt so weird. I was actually in a good mood, for no apparent reason, and I cleaned the house. Now, let me say, I hate cleaning a great deal, in fact I haven't vaccuumed any part of the house for at least 3 years. And halfway into it, I realized what I was doing, stopped, and went back to normal. Is it possible to have a "positive" mood swing? All my mood swings always go to the negative. And no, I haven't been diagnosed with manic depression.