question: hello. i may be over reacting, but I would like to know if my behavoir is normal. I'm always overly excited and happy. It's like I'm always high. Then I randomly get really sad and irratable. I have problems sleeping at night, some nights I don't get any sleep at all. I go through periods where I get really depressed for no reason, and hystericaly happy for no reason. Is there something wrong with me?