Not saying I am Manic/Depressive, or as they now say, Bi-Polar, or anything, but if I did happen to pinball from deep, dark gloom to over-stimulated exuberance and back again; sometimes in an afternoon, or sometimes even in a conversation, maybe it's not a sign of an illness that needs to be remedied, or medicated, but maybe it is just a sign of me "paying attention!"
Not a flaw, but a feature of an engaged mind. And I suppose if I did have multiple personalities, well, I guess they could come in handy every once in awhile. Although, I suppose that means my wardrobe choices would explode exponentially...