I am not at all expecting a diagnosis, but I have had many sudden mood shifts that are not terribly severe, but are infrequent. They can last from a few hours to a day or two. I have a change of self confidence relatively often and my interest in things changes. I have been able to stabilize myself. I can be aggressive, irritable, and have my highs and lows. I was curious if anyone who has Cyclothymia has similar reactions or feelings or if this is common. Any help is appreciated.