Amazingly bipolar. So bipolar it's cool. Bipolar as a superpower.
Tom is absolutely bipolaristic!
Someone experiencing periods of mania or hypomania, mixed with the lows of depression. Mood changes can come quickly with elation and depression at the same time.
Stephan was so narcissistically caught up in his own euphoria, then suddenly found himself trapped in his bipolaristic world of failed attempts to achieve happiness.