When you spend your life alternating between giddy highs and often devastating lows, the hope that arrives with an upswing in mood combined with the walking-on-eggshells, when's-this-gonna-cave-in thoughts is the most natural thing in the world.

I'm at a low point, and I really don't think that is going to end, either. Ideally I'd be just as wrong about this as are the people who stubbornly and understandably convince themselves that every bit of euphoria is permanent.