There are disorders that change your mood from being on the “top of the World” to ending up in a “big, black hole”. These changes could be abrupt or sometimes quite subtle. When you are in a “high”, the sleeping is poor, your thoughts are racing, and you could put yourself into numerous risky situations due a sense that “nothing will happen to you”. When you go to a “low mood”, everything is going down and you feel that you can't achieve anything.