I am bipolar, the worst symptoms for me are the mood swings. At my high points, I am insanely happy and pleasant, I talk fast and constantly, I have trouble staying still and sleeping. During low points, I am very sad and depressed, cry a lot, stay very quiet, keep to myself and I get so tired that I can't bring myself to get out of bed. Sometimes during low points I get very angry and frustrated. I tend to snap at people easily during those times.