If you had Bipolar Disorder, your friends/family would tie you up and take you to a doctor, and all along you would be shouting: "Mujhey kahan le jaa rahey ho, main bilkul theek hoon, Itna accha mood to mera kabhi raha hi nahin....."...:lol::lol:
You could have Cyclothymia, the much milder condition, similar to Bipolar Disorder.
However, you should refrain from diagnosing yourself with these weird Psychiatric disorders. Consult a specialist for a permanent peace of mind. The diagnostic criterias of these conditions are pretty stringent and not everyone who feels depressed is suffering from depression. BTW, maniacs (~bipolars) don't think that anything is wrong with them.....
P.S. : Maniac episode can be dangerous for trading. Overconfidence knows no boundary during such an episode......